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Pale new growth on big plants in coco

Hey all would appreciate some input. These are in coco. I was hoping to flip to a 12/12 this week but the plants look worse everyday. About 3 weeks ago they went from 1 gallons to 15 gallon pots and from a T5 to 1000 watts. Slowly turned the lights on. Feeding with the botanicare products in a good room. These plants are big, the new growth is very pale yellow and the leaves are thin and curling down. The edges of the leaves look burnt but just the very outer edges. This is all happening from the top down. The base of the plants look the best. I try to keep the ph at 5.6-5.8 but the run off is at 6.5 even though 5.8 is going in. I pulled a few lights thinking it was too much light... I flushed with just aqua shield and ph'd water waited 36hrs and fed a regular feeding of about 800 ppms ...waited looking worse. They look best right when the lights come on and worse right before they go off. Any input would be appreciated.
 

LIVE2GRO

Active Member
had same thing happening to my deadhead og kush clone... and i just gave her a nice dose a veg nutes with some cal mag and then the next water i gave just water and protekt and shes looking greener again .
 
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