21 day old are dying quick. bottom leaves going brown

Thanks Tim,

I will try it, I know my tap water is 140 ppm and has tons of cal mag so it could work.

What ppm should I have with 140 ppm tap? I mean it needs A+B so 200 wouldnt work

Coco or not young plants and their roots systems can be moisture stressed in coco. Not until they have a more robust root system can you be begin daily or even multiple watering/feedings a day. And your plants are showing signs of moisture stress. Ease back on the watering. Give them a few days in between.You are drowning the young roots.

zafabafa said:

Thanks Tim,

I will try it, I know my tap water is 140 ppm and has tons of cal mag so it could work.

What ppm should I have with 140 ppm tap? I mean it needs A+B so 200 wouldnt work

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I'd add about 100ppm, and see how that goes. You can always bump up your ppm, anyway.

Good luck dude.

Tim1987 said:

I'd add about 100ppm, and see how that goes. You can always bump up your ppm, anyway.

Good luck dude.

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My plants can't seem to get enough. I'm up to 2 tablespoons of Bloom and 1 tablespoon of Grow for 5 gallons. Feels like too much...

gjs4786 said:

My plants can't seem to get enough. I'm up to 2 tablespoons of Bloom and 1 tablespoon of Grow for 5 gallons. Feels like too much...

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Yeah. It's crazy in stretch. Personally it's when I feed them heavy. I usually peak at around 1000ppms.
I always feed heaviest then. Then I cut back on ppm a little for flower. Lower my nitrogen, and up the pk, if need be.
It's pretty easy, to tip them over the edge, as the stretch starts slowing down.
My last fertilizer was a 4.4.8.
The current fertilizer I'm using is a new one, at 5.3.9.
It was my first run with this bottle.
Was feeding 900ppms towards the end of stretch. I started getting nitrogen claw, towards the end of stretch. So I figured "oh I just over fed a little". So I cut back. Didn't fix it.

I don't generally supplement pk.
To cut I long story short, I needed to add pk. Added pk, plants got better. Amazing really. The analysis on the back of each fertilizer, is almost identical. I was surprised just 1% more nitrogen called for more pk.







Your plants are looking fuken incredible, by the way.

zafabafa said:

They look great.
Canna A+B is 5-4-3
I think my npk is 9-4-5 if im not missing anything.

My calmag is 4-0-0.

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Tim1987 said:

Yep spot on. 9.4.5.
Make it a 5.4.5.
Honestly mate. I'd cut your calmag right out. It isn't necessary.

I suggest plain water to get your waste ppms down. Get them below 200.
Then just start your 5.4.5 at 200ppms, and you should be OK.

If not just report, back to this thread.

Good luck OP

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I'm sorry Zafa.
I wanted to correct what I said.

Your nutrient with calmag is a 9.4.3. Sorry dude. I didn't see the K.

Just use your ab. Which gives you 5.4.3.
If you need a pk booster, during flower. I recommend the Canna pk 13-14.
It's what I use myself, and it rocks as far as supplements go. It's not too weak, or strong. It's npk is 0.13.14. All it is, is phosphorus, and potassium.
Imho it's the perfect supplement. Easy to dose, and I don't have any other crap in it.
Just always start at less than the recommended dose.

Good luck mate.
Your plants should be fine.

Im back!

So things are going great! saturday I gave them a 850 ppm feeding because I thought thy were underfed. Did this before I asked you guys for help.

After your help I then started foliage feeding them my 4-0-0 cal/mag and that perked them up in 1 day. Root problems? lock out? I dont know but it did wonders.

Weather was crap again, hardly any real sun.

Then tuesday they were pretty dry so I started my 250 ppm canna A+B feed, its doing great Today another feed of 250 ppm. Runoff is still a tad high but the plant looks amazing, growing VERY fast.

I want to thank you guys for your help, I think my crop is saved for now

zafabafa said:

Im back!

So things are going great! saturday I gave them a 850 ppm feeding because I thought thy were underfed. Did this before I asked you guys for help.

After your help I then started foliage feeding them my 4-0-0 cal/mag and that perked them up in 1 day. Root problems? lock out? I dont know but it did wonders.

Weather was crap again, hardly any real sun.

Then tuesday they were pretty dry so I started my 250 ppm canna A+B feed, its doing great Today another feed of 250 ppm. Runoff is still a tad high but the plant looks amazing, growing VERY fast.

I want to thank you guys for your help, I think my crop is saved for now

View attachment 4141172

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Great!!
They look really nice and healthy!

I won't say "don't foliar feed".
But I never, ever do.

I don't do coco but I do soil less and coco is considered soil less which PH is not 6 but more like 5.5, I personally do 5.8 so if that's the case your locking out nutes, I only foliar feed when I want a quick reaction so maybe that's why your getting good results (now) but you'll go back to the same problem cuz the roots aren't absorbing the nutes, check a nutrient table to see what your blocking out and correct it from there. This is only my observation and how I grow and only add my opinion to help others in the quest.

Whoa, bro

PopTop said:

I don't do coco but I do soil less and coco is considered soil less which PH is not 6 but more like 5.5, I personally do 5.8 so if that's the case your locking out nutes, I only foliar feed when I want a quick reaction so maybe that's why your getting good results (now) but you'll go back to the same problem cuz the roots aren't absorbing the nutes, check a nutrient table to see what your blocking out and correct it from there. This is only my observation and how I grow and only add my opinion to help others in the quest.

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Thanks, will keep an eye on it. Stopped foliar and will see what they do.

Tim1987 said:

Great!!
They look really nice and healthy!

I won't say "don't foliar feed".
But I never, ever do.

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Me neither, but I think in this case it was necessary to make them healthy. Now I will monitor them to see what happens