Switching to Led's etc have a question..

Apalchen said:

Most likely user error on my part

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I would agree, ive got pounds per plant under QBs. 77 is too cool under QBs,plants need to be a lil warmer, 82ish has worked well for me.

Renfro said:

I would say for that space 410 watts is about max for quality LED. I am not familiar with those particular lights. If you aim for 35 - 40 watts per square foot you will be on the high end provided it's a quality LED. The plants will tell you if they are happy, you wanna see her fan leaves sticking upwards at an angle like they are grabbing all the light they can, if you see them angling down and away from the light it can be light stress and they are trying to avoid the light. You may have to dim the light a little or raise it a little to tune the power.

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Thanx a lot Renfro for calculation,it means me as newbie to get more better picture of what i need to do in these space...

One thing looks weird under LEDs that when i sees plants under lights they look like they have Mg deficience..
but then i pull plants on daylight and they look normal green... its like Fata Morgana but on plants...

I belive light is too intensive and was dimmed a bit,they turning leafes and show characteristic leaf twist
for these strain when stressed.. its all very confusing for first time under strong LEDs..
am have hard time as i dont have light meter to choose a sweet spot.. in start they started
to grow great but then comes leaf twist so yesterday i needed to flush and to measure
PH/EC tough am in organic setup but i didnt know whats the problem and then i found
PH was 7.9 and EC was 550 on Hanna meter..

am feeded lately after i flushed but i belive maybe few days they will need to jump off..
i feel like first time growing in mine life,total newbie for LEDs..