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Yes, the plants in the photo are about a month old. They're most definitely over kill for veg, but with the dimmers and 4+' we assumed they'd be manageable.

Have a few FLORA-10 lights coming from SpecGradeLED soon. Hopefully that will give a good side-by-side in veg to so see if the Gavita's are complicating things.

The light is only dimmable to 50%, correct? With the E-Series LED adapter and the EL controller?

Yep, same thing. Early purple stems, yellowing in center veins, and then wispy curly new growth. This is with 4' off canopy and dimmed at 50%. EDIT: I should add, thought it was odd when I tried feeding a few 2 week old Critical Kush plants 750-1000ppm while under the Gavita LEDs and they...

Someone on Reddit said the same thing about Gavita LEDs. I've taken PAR readings and they're around the same level as other CMH lights we have in different rooms, but it feels like the Gavita LEDs are always the common denominator when I start noticing problems.

Had someone suggest that it's a "hard set flower" from pushing them too hard. Had never heard that term before.

RO water

Watering at 5.7-5.8

CO2: 1200ppm Temp: 80-85F Humidity: 65% Lights: Gavita 1700e, 4ft raised dimmed 50%, PAR around 300-400 Food: Athena Pro 1.5EC at 5.7pH hand watered every 2-3 days at 8-16 oz. Medium: 6" rockwool This is the second tray and strain of plants under these lights and I'm consistently getting this...