Mega crop question during flower

StonedGimp · Jan 3, 2020

I’m on day 26 of flower for these 2 plants, G13 Pineapple Express / Barney’s Peyote Critical, and have a quick question about the feed schedule. I recently stepped up to the late bloom schedule listed on green leafs site and I’m wondering if it’s too much. I upped the amount 2 days ago and haven’t really noticed any changes as of yet. I did see maybe one or 2 leaves that are close to the light having minor burnt tips but this could be from turning the light up to 36-38k par. This is what I’m currently using

Timber 3VL Cob Light

3 gallon smart pot with promix organic soil and 1/3 perlite, watered every other day, it’s more like coco I think and drys out fast

Mega Crop 6 grams per gallon

Sweet Candy 2 grams per gallon

Bud Explosion 1.5 grams per gallon

Mendocino no nitrogen cal mag 1ml per gallon

Mammoth P .6ml per gallon

Well water and the ph is a constant 6.5 after everything is mixed and let sit for 30 minutes and the ppm is 1487

Am I using too much Mega Crop, Bud Explosion, or Sweet Candy? I feel like 6 grams is too much after reading online for the past few days. I have mostly found information from auto growers and everyone says to step down during the last few weeks before flush to no more that 1.5-2.5 grams of mega, anything above that slows bud growth. Any help or input is appreciated. Also, do my leaves look too dark?

kingromano · Jan 3, 2020

1500 ppm epending on scale used is around 2.0 ms. i wouldnt advise to go over 2 mS. personnaly i like to stay around 1.4/1.5 for bloom
your leaves are the good color, with bloom nutrient overdose youd rather have burnt tips , due to the low content of nitrogen(dark leaves/clawing= nitrogen excess) and high content of p/k

TintEastwood · Jan 3, 2020

Quick glance....off the top, careful with the sweet candy and the booster. K too high can cause lockouts of CA. Speaking from experience with MC v1/v2 in COCO.

OldMedUser · Jan 3, 2020

I'm using Mega Crop too in Promix HP and some added manures/worm castings. Yours looks lots better than my girl. Mine is a regualr photo girl and I'm only using 1g/L or less so around 4g/gal. Fed her some Big Bud just before flipping and some more a week later. Also gave her some GreenLeaf P/K boost and Carbo for the myco critters.

That Bud Explosion is fairly low dose p/k so adding some of the Mammoth with it early in flowering is a good idea as pot likes extra P early on but I'd stick to the Explosion for the last of the cycle as too much P later isn't good when it want more K. Once the stretch is over the demand for P lessens tho it's still needed but at lower levels.

To much N isn't needed later and from the look of your plants you seem to have it nailed or you'd be seeing more tip burn and probably along the margins too by now. I kinda like that about the Mega Crop with it's lower N level.

I don't think I've been feeding my plant enough and my pH was too high thanks to using my dugout water for a round. It's pretty hard at pH 8.4 and 400+ppm. I tested and when adding just MC to RO water the pH comes out at 6.0. A good runoff test has it at 6.2 now so hopefully a good feed will perk that girl up. Hindu Kush.

Got a call yesterday from the hydro shop in the city where I entered a contest for a sample pack of Remo nutes. Has a bunch of small bottles of supplements with the base nutes so will be interesting to give those a try. Also have AN 3-part so a 3-way side-by-side would be interesting. Might head out there in a week or so. Bought a 600W MH conversion bulb that I need to return as it's more geared for flowering and I have 4 - 600W Hortilux already to do that job. Want a good MH one.

Your buds should be fattening up real soon and all looks pretty good at this point. I'd cut the MC by half tho I think. Fading fan leaves the last couple weeks is what I like to see. Means the plants are feeding off them for nutes like N. Defoliators don't get much of that as there are no leaves to act as reserves.

:peace:

StonedGimp · Jan 3, 2020

kingromano said:
1500 ppm epending on scale used is around 2.0 ms. i wouldnt advise to go over 2 mS. personnaly i like to stay around 1.4/1.5 for bloom
your leaves are the good color, with bloom nutrient overdose youd rather have burnt tips , due to the low content of nitrogen(dark leaves/clawing= nitrogen excess) and high content of p/k

I have been noticing the top fan leaves are turning very dark green after this last feed so I’m assuming that’s from too much N from the Mega.

TintEastwood said:
Quick glance....off the top, careful with the sweet candy and the booster. K too high can cause lockouts of CA. Speaking from experience with MC v1/v2 in COCO.

View attachment 4449018

Thanks for the chart! That’s extremely helpful. Here’s what I’ve been feeding since flip

week 1 and 2
5g mega
1g sweet
1g bud ex
1ml no N cal mag
.6 mammoth

week 3 and part of 4
5.5 mega
1g sweet
1g bud ex
1ml no N cal mag
.6 mega

Rest of week 4 (reread directions on nutrients) only 1 water so far
6g mega
2g sweet
1.5 bud ex
1ml no N cal mag
.6 mammoth

I bumped everything up after rereading the directions but now I’m rethinking it.

OldMedUser said:
I'm using Mega Crop too in Promix HP and some added manures/worm castings. Yours looks lots better than my girl. Mine is a regualr photo girl and I'm only using 1g/L or less so around 4g/gal. Fed her some Big Bud just before flipping and some more a week later. Also gave her some GreenLeaf P/K boost and Carbo for the myco critters.

That Bud Explosion is fairly low dose p/k so adding some of the Mammoth with it early in flowering is a good idea as pot likes extra P early on but I'd stick to the Explosion for the last of the cycle as too much P later isn't good when it want more K. Once the stretch is over the demand for P lessens tho it's still needed but at lower levels.

To much N isn't needed later and from the look of your plants you seem to have it nailed or you'd be seeing more tip burn and probably along the margins too by now. I kinda like that about the Mega Crop with it's lower N level.

I don't think I've been feeding my plant enough and my pH was too high thanks to using my dugout water for a round. It's pretty hard at pH 8.4 and 400+ppm. I tested and when adding just MC to RO water the pH comes out at 6.0. A good runoff test has it at 6.2 now so hopefully a good feed will perk that girl up. Hindu Kush.

Got a call yesterday from the hydro shop in the city where I entered a contest for a sample pack of Remo nutes. Has a bunch of small bottles of supplements with the base nutes so will be interesting to give those a try. Also have AN 3-part so a 3-way side-by-side would be interesting. Might head out there in a week or so. Bought a 600W MH conversion bulb that I need to return as it's more geared for flowering and I have 4 - 600W Hortilux already to do that job. Want a good MH one.

Your buds should be fattening up real soon and all looks pretty good at this point. I'd cut the MC by half tho I think. Fading fan leaves the last couple weeks is what I like to see. Means the plants are feeding off them for nutes like N. Defoliators don't get much of that as there are no leaves to act as reserves.

I just finished defoliating one of the plants to free up some room for bud sites and I’m not sure if I should cut more off or not. Maybe I won’t so I can use the fan leaves to look for issues. That’s awesome you won some nutes! I’ll try to keep up with your post so I can see what happens with the tests. I also wanted to tell you I also experienced ph issues with the promix. Around thanksgiving so a week or 2 before the flip I noticed yellowing leaves and had no idea what to do so I checked runoff and it was 5.8, I always watered with 6.3 water though. I purchased a ph tester with a probe for soil and while that shipped to my house my plants almost died. After it arrived I checked the soil and it was also 5.8 so I purchased some lime and added it to the top of my soil and then began using 6.5 water and immediately both plants exploded in growth. I have thought about going back to 6.3 but I don’t want to mess up anything I’m doing.

Also, do I need to feed the little critters in the mammoth p? I keep forgetting to email the manufacturer and ask if I need to add something like carbo. if I should be feeding them what are some brands or nutesI should look at?

Can I add anything else to add/bring out terps and make the final product a higher thc percentage?

I’ve also thought about using recharge but I might have waited too late for this grow, I haven’t really looked into it yet.

Anyways, thanks for the help guys!

OldMedUser · Jan 4, 2020

StonedGimp said:
Also, do I need to feed the little critters in the mammoth p? I keep forgetting to email the manufacturer and ask if I need to add something like carbo. if I should be feeding them what are some brands or nutesI should look at?

The Carbo I got from GreenLeaf and the other stuff I also won at a contest here. A kg each of the Carbo, the PK and K alone. 2kg of the Mega Crop. Ver. 2 I think. Keep the Mega Crop sealed up real good as it absorbs water and turns to mud in high humidity.

I gather mammoth P has myco in it? Unsulfured blackstrap molasses is supposed to work as good as the hydro nute versions. This Carbo is just pure dextrose and can likely be bought at a health food store. I like using the molasses as it has all sorts of other good things in too. Too much can cause a population explosion and suddenly your plants have too much nutes too. Pretty sure that's what happened my last grow after lots of molasses and some of the Carbo. I wasn't feeding high nutes either and suddenly got nute burn happening pretty bad 3 days after the feed.

:peace:

FastFreddi · Jan 4, 2020

StonedGimp said:
I’m on day 26 of flower for these 2 plants, G13 Pineapple Express / Barney’s Peyote Critical, and have a quick question about the feed schedule. I recently stepped up to the late bloom schedule listed on green leafs site and I’m wondering if it’s too much. I upped the amount 2 days ago and haven’t really noticed any changes as of yet. I did see maybe one or 2 leaves that are close to the light having minor burnt tips but this could be from turning the light up to 36-38k par. This is what I’m currently using

Timber 3VL Cob Light

3 gallon smart pot with promix organic soil and 1/3 perlite, watered every other day, it’s more like coco I think and drys out fast

Mega Crop 6 grams per gallon

Sweet Candy 2 grams per gallon

Bud Explosion 1.5 grams per gallon

Mendocino no nitrogen cal mag 1ml per gallon

Mammoth P .6ml per gallon

Well water and the ph is a constant 6.5 after everything is mixed and let sit for 30 minutes and the ppm is 1487

Am I using too much Mega Crop, Bud Explosion, or Sweet Candy? I feel like 6 grams is too much after reading online for the past few days. I have mostly found information from auto growers and everyone says to step down during the last few weeks before flush to no more that 1.5-2.5 grams of mega, anything above that slows bud growth. Any help or input is appreciated. Also, do my leaves look too dark?

Those are beautiful plants...I am ordering two x the timbers 3VL's myself...how do you find them? I am very excited. Using them in conjunction with 2x MH SP150's to replace 600 watt hps in spring to fall for heat management.
Again, great job!
FF

StonedGimp · Jan 4, 2020

OldMedUser said:
The Carbo I got from GreenLeaf and the other stuff I also won at a contest here. A kg each of the Carbo, the PK and K alone. 2kg of the Mega Crop. Ver. 2 I think. Keep the Mega Crop sealed up real good as it absorbs water and turns to mud in high humidity.

I gather mammoth P has myco in it? Unsulfured blackstrap molasses is supposed to work as good as the hydro nute versions. This Carbo is just pure dextrose and can likely be bought at a health food store. I like using the molasses as it has all sorts of other good things in too. Too much can cause a population explosion and suddenly your plants have too much nutes too. Pretty sure that's what happened my last grow after lots of molasses and some of the Carbo. I wasn't feeding high nutes either and suddenly got nute burn happening pretty bad 3 days after the feed.

Man that’s really awesome you win stuff from your local shop! My closest shop is an hour away and basically only sells what’s available on Amazon and never gives stuff away.

That’s great to know about the micro maybe next time I’ll try adding a little molasses or carbo and see what happens. Mammoth P is an organically derived microbial inoculant that maximizes phosphorus and micronutrient cycling and uptake to maximize bud growth - increase yield and enhance plant health. I’m assuming it has living microbes in it that need to be fed.

I’m having an issue with my mega getting humid and turning into a big lump. I find it easier for me to take 5 scoops out of the bag and put it into a different container for easy access. However, no matter what I try to put it in it always clumps up after a few days. It does make it easier to weigh out though, 3 grams of powder and 3 grams of little balls clumped together.

FastFreddi said:
Those are beautiful plants...I am ordering two x the timbers 3VL's myself...how do you find them? I am very excited. Using them in conjunction with 2x MH SP150's to replace 600 watt hps in spring to fall for heat management.
Again, great job!
FF

Thanks FastFreddi!! I like the 3VL and it was a great starter light for me to try first. It was kinda difficult to hang using the system I’m using and if I was placing my order again I would go ahead and buy the 4VL. After this grow I’m probably going to sell it or modify the driver location so it’s weight is distributed equally and not hanging off the back. I do find the light isn’t distributed quite evenly inside my 2x4 tent and led panels or pucks like what growmau5 uses might be a better option for me. That could be user error though since my light is pretty close to the canopy. I do find it’s always within a 3k lux difference though so that’s not really that bad. Directly under the cobs I’m at about 36k and off to the side it’s at 33k-34k. I feel like I should be able to turn it up higher but I’m afraid to mess with it. I have also tossed around the idea of building my own light using cobs and leds together but I’m not sure if I’m up to that or not. I do plan to add some reptile bulbs and possibly a 660nm/730nm led panel in a week or so for the last couple weeks of flower.

DrKiz · Jan 4, 2020

I always see guys bitching about their megacrop absorbing moisture and clumping.

Make sure when you seal it you throw a couple desiccant packs in to absorb moisture.

OldMedUser · Jan 4, 2020

StonedGimp said:
I’m having an issue with my mega getting humid and turning into a big lump. I find it easier for me to take 5 scoops out of the bag and put it into a different container for easy access. However, no matter what I try to put it in it always clumps up after a few days. It does make it easier to weigh out though, 3 grams of powder and 3 grams of little balls clumped together.

My 2kg bag of the MC is still bone dry but when I first got it I took out 200g and pulverized it to bust up those rocks in there. Reason being that if I wanted to weigh out very small amounts, (0.5 - 1g), I could have more or less of those pieces which would cause the balance of the nutes to be off. Not certain what those are but bound to be a single component of the mix. I kept that portion in one of those Ziplock sandwich containers and they don't seal all that well. By the time I was getting down to the last 50g or so it had gone all wet in parts. There's something in there very hydroscopic that's pulling in the moisture.

DrKiz said:
I always see guys bitching about their megacrop absorbing moisture and clumping.

Make sure when you seal it you throw a couple desiccant packs in to absorb moisture.

That's a good plan. Wonder if the Bovida's I bought would work but I have a big jar of colour changing crystals called Drierite I could use.

:peace:

DrKiz · Jan 4, 2020

Yeah man I always save those little packs when I come across them. Tonnes after Christmas!

Throw em in with seeds and dry ferts.

StonedGimp · Jan 4, 2020

DrKiz said:
Yeah man I always save those little packs when I come across them. Tonnes after Christmas!

Throw em in with seeds and dry ferts.

I just threw a bunch away and didn’t even think about saving them for in the nute containers. I’ll dig around tonight and see if I have a few, I’m pretty sure a pack of jerky I have has one in it.

TintEastwood · Jan 4, 2020

Treat it like weed.

I fill up a couple wide mouth mason jars for easy access and mixing. They seal.

If I have a big bag of powder, I double bag it in a turkey bag. Then into a 5gal bucket with lid.

toomp · Jan 5, 2020

StonedGimp said:
I’m on day 26 of flower for these 2 plants, G13 Pineapple Express / Barney’s Peyote Critical, and have a quick question about the feed schedule. I recently stepped up to the late bloom schedule listed on green leafs site and I’m wondering if it’s too much. I upped the amount 2 days ago and haven’t really noticed any changes as of yet. I did see maybe one or 2 leaves that are close to the light having minor burnt tips but this could be from turning the light up to 36-38k par. This is what I’m currently using

Timber 3VL Cob Light

3 gallon smart pot with promix organic soil and 1/3 perlite, watered every other day, it’s more like coco I think and drys out fast

Mega Crop 6 grams per gallon

Sweet Candy 2 grams per gallon

Bud Explosion 1.5 grams per gallon

Mendocino no nitrogen cal mag 1ml per gallon

Mammoth P .6ml per gallon

Well water and the ph is a constant 6.5 after everything is mixed and let sit for 30 minutes and the ppm is 1487

Am I using too much Mega Crop, Bud Explosion, or Sweet Candy? I feel like 6 grams is too much after reading online for the past few days. I have mostly found information from auto growers and everyone says to step down during the last few weeks before flush to no more that 1.5-2.5 grams of mega, anything above that slows bud growth. Any help or input is appreciated. Also, do my leaves look too dark?

Finish the grow and lower the mega next go and see which yields better

StonedGimp · Jan 10, 2020

Okay guys it’s been 5 days since changing the mega crop feeding amount and I’m noticing some burnt tips and today it looks like some yellowing/rust between the veins. The plant it also turning purple but I’m pretty sure that’s from genetics and cooler temps the past couple nights. Could this be from too much sweet candy or bud explosion or from lowering the mega crop? My other plant looks great and the dark green color has fixed itself on both plants. I’m thinking it’s a calcium lockout or deficiency like TintEastwood said would happen if I didn’t cool it on the bud explosion and sweet candy.

TintEastwood · Jan 10, 2020

StonedGimp said:
Okay guys it’s been 5 days since changing the mega crop feeding amount and I’m noticing some burnt tips and today it looks like some yellowing/rust between the veins. The plant it also turning purple but I’m pretty sure that’s from genetics and cooler temps the past couple nights. Could this be from too much sweet candy or bud explosion or from lowering the mega crop? My other plant looks great and the dark green color has fixed itself on both plants. I’m thinking it’s a calcium lockout or deficiency like TintEastwood said would happen if I didn’t cool it on the bud explosion and sweet candy.

From those pics - seems like cal def. Rusty spots on leaves.
What that no N cal you are using? May need more. Cobs can cause more need for cal.

StonedGimp · Jan 10, 2020

TintEastwood said:
From those pics - seems like cal def. Rusty spots on leaves.
What that no N cal you are using? May need more. Cobs can cause more need for cal.

Do you think I have a lockout due to too much sweet candy and bud explosion? The no nitrogen calmag I’m using is from Mendocino nutrients. I do still have some clawing going on also but it’s better now and the leaves have lightened up since lowering the mega crop. I should of just left everything alone and kept feeding the same amount till the end.

OldMedUser · Jan 10, 2020

Leaves start going funkier the further you get into flowering and it can be a lot of things. Boron and manganese are often the culprits as there is not a lot to start with and most nutes don't have much if any of either. Same with zinc which is very important as a catalyst in many of the chemical reactions the plant needs to utilize many other nutrients properly. Not a lot of that in most mixes either so I add some a couple times during a grow along with ascorbic and citric acids, iron, B-1 and selenium which I seem to have run out of.

One thing you might want to get and most garden centers should have it is Fritted Trace Elements. I add a bit to my soilless/soil blends so the plants have a little extra of things like Mn, B, Mo, Zn, S, Fe, Cu etc. It's a granular material that is very slow release and the 500g can I have was only $8.95. For faster release I'll pound some to powder in my mortar and pestle. A couple tsp/5gal pail is lots.

:peace:

StonedGimp · Jan 10, 2020

OldMedUser said:
Leaves start going funkier the further you get into flowering and it can be a lot of things. Boron and manganese are often the culprits as there is not a lot to start with and most nutes don't have much if any of either. Same with zinc which is very important as a catalyst in many of the chemical reactions the plant needs to utilize many other nutrients properly. Not a lot of that in most mixes either so I add some a couple times during a grow along with ascorbic and citric acids, iron, B-1 and selenium which I seem to have run out of.

One thing you might want to get and most garden centers should have it is Fritted Trace Elements. I add a bit to my soilless/soil blends so the plants have a little extra of things like Mn, B, Mo, Zn, S, Fe, Cu etc. It's a granular material that is very slow release and the 500g can I have was only $8.95. For faster release I'll pound some to powder in my mortar and pestle. A couple tsp/5gal pail is lots.

Awesome! Thanks OldMed I’ll add it to the list and pick some up the next time I’m out. Should I just perform a soil flush tonight with ph correct water and then water with a few nutes the next time?

TintEastwood · Jan 10, 2020

StonedGimp said:
Do you think I have a lockout due to too much sweet candy and bud explosion? The no nitrogen calmag I’m using is from Mendocino nutrients. I do still have some clawing going on also but it’s better now and the leaves have lightened up since lowering the mega crop. I should of just left everything alone and kept feeding the same amount till the end.

The Mendo cal mag is 2% 1%. Great that it's zero N.

1ml in a gallon gives the following...
5.3 ppm of CA
2.6 ppm of MG

I should add that one to my chart.

Recommend you add up the PPM numbers for what you are mixing.

Mega crop question during flower

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