Problems immediately after starting bloom cycle

I’ve been having this problem since I moved my lab and I’d say the only thing I can say is different is my bloom room is full of 1000w DEs whereas in the past I had exclusively standard 1000w HPS in the bloom room. I’m my veg room I use 1000w MH whch I’ve never had any issues with.

When I transfer my plants I get discoloration and “shrinkage” to the upper most part of the plants. The shrinkage goes away after a while but yellowing persists through out the plants’ life.

I’ve tried lots of things but to no success. My plants finish pretty good but I know there’s less yield because of this. Most recently I was told by the guys at my friendly grow store that it’s possinly iron deficiency because of the way the plants look. It’s suggested that due to the stronger lights the plants are using more energy and the iron is lacking.

Any constructive feedback would be much appreciated

Its called light burn.

https://www.growweedeasy.com/cannabis-light-burn

Whats your temps, and how far do you keep your 1000w de. Hps light from the canopy?

How high is your ceiling ?

They are 4ft away and I even turned them down to 600w.

Question (not arguing just trying to go through all the possibilities) wouldn’t light burn continue through the end of bloom and not recovery around 3 weeks in?

I keep it around 75 deg. Also I have a co2 enriched air

Whats your medium and have you fed them yet?

looking at just the yellow tops as nutrient related id agree is does look like it COULD be iron def

but looking past the yellowing im seeing some minor taco leaf with the leaf margin folding up a little, im seeing some leaf under curl or slight claw and im seeing the leaf tips hook, and the leaf crinkle

all of those things combined worry me more than the yellowing

id look into adding magnesium, id not feed them heavy since they look dark green and it look at insects


(I just said the exact same thing in my last post to another thread...idk maybe I got bugs in the brain lol)

I’ve been battling bugs for too long. I feed th

projectinfo said:

Whats your medium and have you fed them yet?

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i use promise hp+ and I feed them weekely or more