Coco problems

Hi I have half my plant in mo coco and they are doing great and my other half in coco that came in brick form that is a lot chunkier. The plants are candy kush. I am feeding them gh flora series once a day with ample run off. I am also giving them cal mag as well. The plants in the mo coco are doing great as the ones in the brick coco are wilting, yellowing from the outside of the leafs in and just don’t look happy. I treat all the plants the same. I follow the gh feeding schedule and am currently repeating week 3 of veg. All are in 3 gal fabric pots under bestva led lights. First plant is the happy one in mo coco and second unhappy one in brick coco. Ps the have been like this for about two weeks since transplant.Any help would be greatly apreciated!!

people say some coco should be rinsed before using.

raggyb said:

people say some coco should be rinsed before using.

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Yea I read that too so I ran a few gallons of just water threw one and it is still the same as the others

the weird thing is the "worse" one seems to have more leaves. so imho it isn't abolute certain that it's the brick coco problem.

May one ask how much food you are giving Them?
My experience tells me if the biggest plants are yellow then there is to little food. I always look at the smallest/biggest plants and trying to keep it little higher then what the smallest could handle and little lower EC then the biggest.
What's your PH? Try 6.2 for better calcium and magnesium uptake. I see they are hungry of both those nutrients. The light green stripes on all the leafs and the upper leafs of the bigger plant shows cal-def.

^^
I see what he's talking about now. That's probably it!

Bottom one looks like it is sexing out. ....Pistils

Are these autos ?

I notice you had just watered them.
Watering too often, will do this too.

SheldonCooper said:

May one ask how much food you are giving Them?
My experience tells me if the biggest plants are yellow then there is to little food. I always look at the smallest/biggest plants and trying to keep it little higher then what the smallest could handle and little lower EC then the biggest.
What's your PH? Try 6.2 for better calcium and magnesium uptake. I see they are hungry of both those nutrients. The light green stripes on all the leafs and the upper leafs of the bigger plant shows cal-def.

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Hey thanks a lot. I was doing half what gh requires which is about 700 ppm and ph to 5.8. I upped my cal mag and kept the nutrien level the same, and they seem to be better!!!

SheldonCooper said:

I always look at the smallest/biggest plants and trying to keep it little higher then what the smallest could handle and little lower EC then the biggest.

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That's some great advice right there.