newbie question: how long should i leave light on?

[jacky]

yes... i have UV glass there. reason i put so low because i dun want to loss the par when i am getting sps later on.

they are torch, hammer, and open brain.

temp was 82. they retracted.

today, they look normal(fully open) again.

btw, when should i be feeding them? morning? noon? evening?