Magnesium?

Hello everyone,

I am having a bit of trouble this go around, I usually don't struggle this much but I got a new light. The light is a 600w LED with switches for bloom and grow. I put these babies in the tent when a bigger plant was in there in flower so they were in when the bloom light was on, however the light was very far away and I figured they would be fine. My big plant had horrible problems with her, acidity spike and then dying off on the edges of the leaves after yellowing. It's been a nightmare getting used to this light. I have grown under a 150w LED until now and everything has been well. Trying to figure out how to use this 600w is giving me headaches.

They are four different strains, all started at the same time. I have a mix of Formulex, silica, and calmag in the DWC buckets. PH 5.7-5.8 no huge shifts. EC .7 and these are autoflowers.

To me, what I am seeing is a magnesium deficiency. I know LED makes the plants hungry for the calmag but holy shit am I struggling. Any advice and tips is wanted, thank you in advance.

Espom salt. Dont need much. 2 grams to a gal shud be good if yur nutes have none
Sir KK

I have been using an epsom salt mix, however I also use calmag. Do I need to be dosing my DWC more often wiht the calmag?

MJA

too little for 600w they are light fragile when young. pull that light way up

All LED grow light have UV spectrum, that produces ozone in the air, and your plants are too young to handle it. Keep your LED 24" above your plant. And as plant grow slowly lower you light. I would veg with fluorescent light.

Alright, I have the light at 3 foot, I had it at2.5 before. The light actually has a half power setting so it is only 300 watt right now. Signs have gotten worse since last night again. I may just shut that light off for now and go with the CFL until they get a bit bigger.

MJA