I got a 8 bulb t5 fl;uorecent ficture, and All the pl;ants i have the leaves curl down they still grow but they seem l;ike they should be perking up more. I am in a small room. t5 8 bulb temp is usually 65 outside there is no new air in the room NO FAN? im confused
you need some kind of fan/air exchange in there. It may not even be temps... T5s put off a ridiculously low amount of heat. Could just be lack of CO2 suffocating them.