Coco
- Thread starter 528
- Start date
JohnDee
Well-Known Member
528,
The deal with runoff is that you look at the ph in (nutes or water) vs the ph out (runoff)
So if ph in is 5.7 and ph out is pg 5.1...that probably means your media is even lower. Are you allowing your nutrient mix to sit for awhile after mixing and correcting? ASomehow, your coco has too low a ph. I hate to say flush...but with coco, that might be your correct choice. People suggest using 1/4 strength nutes to flush. I don't know if this is OK for coco too. And don't lower ph at all. After flush, check your runoff again. And please, get some confirmation on this. I'm an experienced grower but my coco experience is limited.
And don't bother with correcting Mg deficiency now, since that deficiency is probably related to ph and a malabsorption. But CalMag or MgSO4 are what's commonly used. I'm going to ask a coco buddy and will get back to you.
JD
The deal with runoff is that you look at the ph in (nutes or water) vs the ph out (runoff)
So if ph in is 5.7 and ph out is pg 5.1...that probably means your media is even lower. Are you allowing your nutrient mix to sit for awhile after mixing and correcting? ASomehow, your coco has too low a ph. I hate to say flush...but with coco, that might be your correct choice. People suggest using 1/4 strength nutes to flush. I don't know if this is OK for coco too. And don't lower ph at all. After flush, check your runoff again. And please, get some confirmation on this. I'm an experienced grower but my coco experience is limited.
And don't bother with correcting Mg deficiency now, since that deficiency is probably related to ph and a malabsorption. But CalMag or MgSO4 are what's commonly used. I'm going to ask a coco buddy and will get back to you.
JD
JohnDee
Well-Known Member
Did a little research...this low ph and MG lockout is a known issue with coco. If you have any calmag, use that in the flush (1/2 strength) and only correct to perhaps 7. After the flush (5x pot size)...lower nutes to 1/2 strength. Then watch plants and slowly increase inutes. Unless someone has a better idea.
JD
JD
Silky Shagsalot
Well-Known Member
i've been growing in coco a while, and i've seen your questions/problems before. optimal ph for coco is 5.8. (next time you use coco/transplant, add 15-20% perlite, really beneficial.) about your crispy leaves, once they get that way, they wont be back, so just yank them. i think you were talking about the ph of the run-off, and the coco itself. i also think i read someone talking about ph'ing your feed to get the mediums ph back into range. what else, flushing, i can't remember the rest, and i don't want to be bouncing back and forth, lol. the only thing that you should be concerned with regarding run-off, is that you get enough, (10-15% is good.) chasing ph, trying to get the run-off ph, to match the ph of what you feed, is a waste of time. as long as you properly ph "everything," you put in/on the plants, ph should never be an issue. as the plants drink/eat, of course, the mediums ph is gonna fluctuate. this also means that the run-off, (of course) will also fluctuate. only makes sense, right??? now just because the medium/run-off ph is different, doesn't mean automatically, that your plants are gonna display issues. it's pretty much the same in soil. i feed every day, and allow for run-off. this run-off acts as a "mini-flush," and keeps things from building up, which is a good thing. so as this build-up washes out, the ph is gonna be different because there will be added nutes... so the ph will constantly be changing because of the addition of nutes, and or the removal of water the plants drink. you don't wanna flush coco, cause your run-off does that, and at the same time, replaces old/depleted nutes, with fresh ones. hope this makes sense, i'm a little high, lol...
smegpot
Well-Known Member
I grow cocco. I usually pre-mix for the week into 1 gallon empty water jugs and ph as well. When I first started I ph'ed and mixed food just before I fed and got issues like you're having. Letting the mix properly sit and dissolve solved it. 1 hour min, and 5 days max just sitting in the jugs is about the lifetime of my mix (the longer it sits though after 3 days, the more off kilter the mix starts to become. Sometimes it happens without rhyme or reason, the plant just got a bad pocket of whatever.
EvlMunkee
Well-Known Member
this is good advice for coco.
your leaves are burning from the built up nutes in the coco. your ph is low because of the build up. Don't flush it...just start using adequate runoff and the problem will go away after a couple waterings