Although I don't run LED's,I do use perlite,coco and vermiculite. Mix them just about 1/3 each. Maybe a tad more coco in the mix.
The coco offers some organic property to the mix that some of the beneficial bacteria and fungi might take to a little better.
I might be full of crap, but I'm having some fairly amazing results right now. I have used DWC, straight vermiculite, straight perlite, and soil but this mix so far has worked best for me.
My main nemesis growing is heat issues; Mainly caused by a piss poor ventilation system and lack of funds.
Y'all keep up the good work.......J
Skihigh Reviewed by Skihigh on . Led's light bleaching? on a legal medical grow the panels, (one veg, one bloom 240w blackstars) are roughly 16-18" above several plants, two in coco, two in fox farms, and two dwc.. all of the plants are stunted, all of the plants have dead foliage. Ph is good, temp is good, ppm is good.. several of the plants have white patches on their leaves, like all the color has left. most of the plants cotledons have dried up like a nitrogen defficiency... they have been treated with micronute foliar sprays.. canazyme, Rating: 5