HELP! 4th Week flowering, leaves r turning lime green in color, leaf tips burnt down

Here is some information I saved from another source & may prove useful to u. As far as the ph up/down, u would ph that into ur water. Now it could take a tsp. to maybe 1/2 cup per gallon to get that where u want it to be before adding to ur plants so start small. U should check ur soil after adding ph up/down within about 10 minutes to see the affect it had.
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make a note of the PH of the water you're giving.
catch enough runoff to test. make a note of runoff PH
take the difference between those 2 and half it
add the halfed difference to the runoff number
take that sum, and half it. that's the PH you need to set your water to to flush all build up out of your medium.

example
fooding water: 5.8
runoff: 6.2
difference: .4
.4/2=.2
.2 added to runoff equals 6.4

a good PH, no need for adjustment

fooding water: 5.8
runoff: 6.8
difference: 1
1/2=.5
.5 added to runoff equals 7.3

much too high. so half that total sum: 7.3/2=3.65

if you phed your water to 3.7 and gave that until you have 25% runoff(ie 4liter pot 1 liter runoff) that will effectively flush the build up out of your medium, renewing it's buffering capabilities and cleaning it of other undesirables.

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Honkeycorn said:

Hi All here is the DAY 3 update,


I`ve gone to the shop and picked ua few items:
- TDS Wand (PPM/EC/CF @500)
- Hanna PH Meter
- PH up, Down, Buffer #7, Electrode Storage Soultuion
- Superthrive
- Supermax B1p
View attachment 1473679View attachment 1473683View attachment 1473685View attachment 1473681View attachment 1473682View attachment 1473677

***Mad Props to my store owner for this next 1L FREE SAMPLE
- General Hydroponics Floral Nectar Sweetener Fruit`n`Fusion 0-0-1 wasn`t even on the shelf yet!

View attachment 1473680

So, Here is some reading from the Liquids:
My tap water is ................................60ppm, 7.0ph.
My Nestle Purlife bottled water is ..360ppm, 7.0ph.
My half strength nute mix is ..........360ppm, 6.5ph. supossed to be 5.8ph.
My full strength nute mix is ..........1250ppm, 6.0ph. supossed to be 5.8ph.

I know they are not that accurate but I tried to get some readings directly from the soil with these instruments and go So,

Here is some reading from the Soils:
- Old soil type prior to transplant 6.1ph with 360ppm from the bag.
- New soil type after transplant 6.5ph with 820ppm from the bag.
- Soil today 6.1ph from 3 inch down in one of the girls buckets.
- Today My Soil`s runoff is 6.9ph and 120ppm

I`ve never used the ph up or down so I`m not totally clear on this process. Can someone please break it down? How to apply and how often for what results?

Now I need an action plan, What would you recommend with the new weapons at my disposal?

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Why would you use bottled water? That tap water is perfect for growing in, pH7 60ppm, I wish mine was that low!

Harrekin said:

Why would you use bottled water? That tap water is perfect for growing in, pH7 60ppm, I wish mine was that low!

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I am not using bottled water to feed them, I was just simply conducting an experiment and wanted to see what botled was

How large is your grow space? 12inches seems close to bring your bulb without direct ventilation or an extraction setup. Has it always been at the same distance
or are you restricted hight wise?

MG soil always seems to have some sort of prob with cannabis .I tryed it because of all the forum hype .Plants were deficent in 3weeks ,threw the rest in the trash .I know some ppl only have acess to MG but those should find the threads on here where others had sucess to see how they ammended against problems. If you put the right amount of dolomite lime in your soil you wont have ph problems . At 4 weeks is where any soil is gonna show problems if not limed .

I also have tryed all the household sources for ph adjustments .Apple cider vinegar in my opinion has worked the best for me .

spacecake13 said:

How large is your grow space? 12inches seems close to bring your bulb without direct ventilation or an extraction setup. Has it always been at the same distance
or are you restricted hight wise?

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Grow space is a closet that is wide open more than half the day. Venting and scrubbing is a few weeks away

There is also a few feet above the lamp where the heat can rise a bit to.

Closet Size: 4.5'W, 3'D, 8'H

kingofqueen said:

MG soil always seems to have some sort of prob with cannabis .I tryed it because of all the forum hype .Plants were deficent in 3weeks ,threw the rest in the trash .I know some ppl only have acess to MG but those should find the threads on here where others had sucess to see how they ammended against problems. If you put the right amount of dolomite lime in your soil you wont have ph problems . At 4 weeks is where any soil is gonna show problems if not limed .

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Ya, I think im now done with MG, Believe it or not for me finding good soil with no or minimal nute pre-mixed is hard. Prob gunna mix my own next. Anyone got good links to making your own mix or anyone got a secret mixture?

Secret mixture is called hydro or air my friend!But your plants do loo alot better from the 1st pics I think.Am I misunderstanding or did you say you transplanted in week 4 or flower?

jeeba said:

Secret mixture is called hydro or air my friend!But your plants do loo alot better from the 1st pics I think.Am I misunderstanding or did you say you transplanted in week 4 or flower?

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Yes Hydro will come one day. This is my first grow though and It was only slapped together as I went after the clones got dumped on me.

I transplanted 3 days ago and that was on their 28th day into flowering.

Honkeycorn said:

Yes Hydro will come one day. This is my first grow though and It was only slapped together as I went after the clones got dumped on me.

I transplanted 3 days ago and that was on their 28th day into flowering.

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Im thinking that stressed them did youu leave them in the dark?And rest them?I wouldnt ever transplant half way thru flowering sounds crazy to me!

jeeba said:

Im thinking that stressed them did youu leave them in the dark?And rest them?I wouldnt ever transplant half way thru flowering sounds crazy to me!

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Ya, I usually wouldnt have but I felt the reason they were lime greening up was cas the roots were stressed from being in only 1.5gals. Put them into 5 gals.

some strains carry that lime greeen i had a few that went lime green leafs not a real biggie buds were good still
you in soil you want your ph to be in the field of 6.8 to 7.0 most nutrients when mixed have a ph buffer in them so mix your nutes then calibrate your ppm meter and ph meter and see what u got chances it will say 6.5 next watering flush a few of your plants with ph'd water flush them good and see what your real soil ph is most of the time first runoff will give you a false reading so once there pouring out drain your catch can and then catch the water i noticed you got a ppm meter do you got proper calibration liquid for it and your ph meter you need 7.0 calbration juice for ph meter and 1876 for your ppm meter you probably getting false reading to begin with

DrFever said:

some strains carry that lime greeen i had a few that went lime green leafs not a real biggie buds were good still
you in soil you want your ph to be in the field of 6.8 to 7.0 most nutrients when mixed have a ph buffer in them so mix your nutes then calibrate your ppm meter and ph meter and see what u got chances it will say 6.5 next watering flush a few of your plants with ph'd water flush them good and see what your real soil ph is most of the time first runoff will give you a false reading so once there pouring out drain your catch can and then catch the water i noticed you got a ppm meter do you got proper calibration liquid for it and your ph meter you need 7.0 calbration juice for ph meter and 1876 for your ppm meter you probably getting false reading to begin with

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I will be testing the runoff in a day or two and will keep you posted. Ofcourse my store didn't have the ppm calabration liquid. But the box says it should not need to be calibrated for quite some time. It is on my next online order list forsure though.

I did manage to get the #7 buffer for the ph meter though. Plus electrode cleaning solution.

A lime green gene are you serious?

Honkeycorn I'm using .5 gallon pots for mine and I'm in week 5 and I haven't had an issue...then again I'm growing northern lights #5 (80% indica) so maybe the shortness of the plants helps...but yeah you were fine with the pots you had. Probably caused unnecessary stress but as long as your girls are doing fine that's good. Got any recent pics to show after the transplant and all the new stuff you're doing? How is balancing the pH doing for you? I just got a soil pH checker and my shit is at 7.5 and my plants are showing but I don't have a way to drop it, or test my water. I'm probably gonna feed with 1 tblspoon per gallon of apple cider vinegar once a week until they are done.

Also if you're in week 4, probably closer to week 5 now you should start thinking about using some blackstrap (unsulphured!) molasses; I wont piss down your back and tell you it's raining but just from one feeding I'm starting to see a nice difference with the molasses, the cola on my fattest plant is starting to swell like mad and that could be because I'm in week 5 day 2 of a 6-7 week plant, but from all I've read about the microbiological processes of MJ plants the carbs and nutes molasses provides are only going to make my babies even better! Consider doing the same unless you'd rather chemically nute the whole way through, to each their own though. Let me know how things are going and happy growing!

Day 6 Update
Hey Nwaredstar7 and other followers, I think I have good news for the DAY 6 Update.

Here are the steps taken:
1. Transplant to larger pot
2. Flush with Final Flush next day after transplant
3. Feed their first full strength nute mix(1250ppm) compared to the halfstrength they`ve always had (320ppm) the day after flush. With a 2 drops of super thrive

Were now day 6 (3 days after nutes) and here is how they look now, some fresh pics taken 10 mins ago and I can say they are looking healthier and darker especially around the bud sites:


Lets hope this trend keeps up with the Supermax B1 and Floral Nector(Which has Molassis in it with other sugars and carbs) next feed, then its flush time. We are now approaching week 6 of flowering(starts tomorrow), How soon should I expect these to be done? Some of the pistols (5%) have turned dark and the Tric`s are getting longer but nut a boulbous tip yet. I need one more week to let this last feeding (tomorrow) be absorbed then flush for two weeks.

Does it look like there is 3 weeks left to these girls or is it going to be shorter or even longer than that?

Just trying to estimate my harvest date to plan for flushing, Do I have time for another week of feeding or should I start a two week flush this week?

It looks like the buds could swell alot more, but at the same time the pistols are already starting to turn dark?

What should I do/ plan for?

i would wait for another week to start the final flush.
feed them one more time with P-K and cal-mag.

DAY 7 Update

So today is feeding day, Ive mixed up a Lil` Tonic for the plants:

The following mix is in 1 Gal of water:
- 5ml Grow A
- 5ml Grow B
- 10ml Bloom A
- 10ml Bloom B
- 3.75ml Supermax B1
- 10ml Floral Nectar
- 1 drop of Superthrive

This solution is 1300PPM and 6.5PH, this will be their last feeding and I will start to flush in a week.

Anyone this this mix is a good idea or too many PPM`s?, should I water down a bit?

I would agree you are probley right with your narrowed down thoughts on what it could be. As you said you are a first time grower and you trans planted root bound plants and was it after you transplanted them they got worse? Also i try to only have to transplant each plant only once, yet i think your proble is a slight nutrient deficiency. I also skipped using a PH Tester for years until we had a devastated veg and i couldnt figure it out? With total organics i had unkowingly been using clorinated water! Big Oops! I would alos use epsom salt but would also recomend a ph tester as there are kits that are pretty good and cheap. As you are only using a 250 i would bet a sllight nute deficiency and a bit of stress for double trans and root bound second trans. I dont believe your problem will get worse make sure your water is pure h20 and if need be give a quick flush and then start the nutes back up i didnt see you used miracle grow potting soil and that leads me to believe as first time grower you probley take pretty good care and sometimes can over do it as it does seem they may have been over hit with nutes even though scaled back never grow with miracle grow and miracle grow is not organic so be careful and next time go with something easier for a beginer and use roots or foxfarm as a base for flowering and keep your nutriens simple. Although i will also say that your plants have a strong root system and will continue to grow and the fresh growth is your sign to tell if the problemss getting beter or worse. Pull the remaining and most infected fan leaves to give more direct light to the botom branches. Just a few ideas to help then wont stress plant anymore by it trying to rebuild the health of unneccessary leaves. None of my recomendations are a must and i agree you may wanna add cal/mag lighltly but dont over do it they seem like they will pull threw just perfectly! Well done for a beginer! If you have any questions PM me any time. Also as stated try to keep on a consistant feeding schedual and as said check soils moisture befor watering at any time. I think you will be fine its a nice coctail and i would go light on some and go with the cal/mag and pk asMiraclegrow takes along time to be nute deficient so over nuting can happen easily Keep an eye on things and just Keep it Simple. Peace, SENSI/ SORRY I CAN RAMBLE SOMETIMES!