Please Help. Yellow Plant

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No1up

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I have two autos and one fem and they all show some sort of sickness. The small one, a fem, is yellowing with crusty leaves, I thought it was from my having the tent at 90f for a few hours by accident but even the new growth is yellowing. The other two show completely diffrent signs. One has yellow all over starting at the bottom with dead leaves now. And the other looks overwatered (I have not watered in a week) and is showing yellow tips here and there.
 
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No1up

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Soil is coco loco, 260w qb, 3gal pots, im using Mega crop as fert but have not used any to date. I also have cal mag and sweet candy on hand.
 
oldskol4evr

oldskol4evr

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your coco is probally dried to a brick without feed for a week,just saying coco has to stay moist as does most meidas,and coco is feed every time,when i ran coco i feed everyday,thats main reason i dont like it,worked my ass to death with 15 4ft to 5ft plants,lmao,feed um my friend,they def stressed now,so watch um for about a week on the new growth
 
oldskol4evr

oldskol4evr

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dont worry about the dead leaves,but watch the new leaves if you dig,those effected there are coming off anyway
 
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No1up

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Feed them 2.5g of Mega Crop and 1 tsp of cal mag. In a few hours they looked healthy again. This morning they looked amazing. They just needed some love. I killed my first run by over nitrogen :( so im catious when it comes to ferts.
 
crimsonecho

crimsonecho

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You can be cautious with nitrogen thats your choice but from what i understand you have to keep coco moist always and feed with every watering. Don’t stop watering to keep them from getting too much nitrogen, just split the n you give weekly to 7 or more waterings. I am not coco guy but, coco people here have always made clear that you need to keep it moist and fed.
 
Durksta

Durksta

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You can be cautious with nitrogen thats your choice but from what i understand you have to keep coco moist always and feed with every watering. Don’t stop watering to keep them from getting too much nitrogen, just split the n you give weekly to 7 or more waterings. I am not coco guy but, coco people here have always made clear that you need to keep it moist and fed.
You are everywhere now lol auto pro
 
Noobmaster69

Noobmaster69

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So I seem to have a similar if not the same issue with new growth on tops being yellowish.. 8 weeks into veg using 1/2 FFHF and Coco, roots for nutes...I'm new to Coco and I'm wondering if I'm under feeding but scared to overfeed as well
 
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PlumberSoCal

PlumberSoCal

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So I seem to have a similar if not the same issue with new growth on tops being yellowish.. 8 weeks into veg using 1/2 FFHF and Coco, roots for nutes...I'm new to Coco and I'm wondering if I'm under feeding but scared to overfeed as well
Try a foliar spray of 1 tablespoon Epsom salt to 1 gallon of water.

Feed a little more.

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