Quote Originally Posted by papapayne
and one last thing to considering...your comparing the wrong thing. Watts is a unit of energy used. The real question is which has more lumens in the correct range...do you know which has more lumens the hps or your t5s?
That's right.
You have to factor conversion efficiency with Watts.
And for plants, it's best to use PAR for comparing grow lamps.

"Lumens are for you, and me.
They don't mean shit to a tree". --Wee

Way to grow Papa.
You have skills.

Aloha,
Weeze