I grow with T5s and only T5s. I grow in a mix of coco fine and chunky, ewc, kelp meal, blood meal, bat guano, vermiculite and perlite, and a full load of beneficial microbes and fungi. The only nutes I ever use is Bio Thrive vegan bloom food 4-2-2.
Now not saying plain coco is bad, but I don't worry about, or even check my ph more than once.
Always bottom water, never pour water on the medium, I don't like gnats.
My light are only 4 to 6 inches off the plants, I have a clip fan that blows across the plants. Heres some pics, Oh yeah I grow with a scrog only as it increases your output when using T5s. I love my T5sI also pump 3psi of air into the root zone, roots gotta breathe.
Strains Frosted Flake on the left LSD on the right.
Real nice and thanks for the fellow T5 experience pointers. Are those 5 gal tubs you are using? What kinda of yield did you get?