well right now i have a 36" 21w t-5.like i said im pretty new to t-5 so i want to change these old bulbs out and i want the best bulb for it so i can add sps
well i cant see what fixture i have right now because it is up in my canopy.with t-5 does it matter what type of fixture you have to go ho or does it have to be a certain fixture.im guessing HO would be ideal for sps.like i stated the bulbs i have in right now are 21w.i bought this fixture off a member here i didnt get all the info which i should have.but what im reading is
blue +
aquasun
super actinics
blue+
at 39w HO
duke, I believe that the Normal Output (21w bulbs) in a 36" fixture is not sufficient for most sps. Can it be done? Yes. I don't think you'll get the best color or best growth from this lighting. It is considered weak in the T5 world.