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Jerm77 · 11/11/2008, 10:23 AM

turned on the actinics last night.

I have the lights about 9 1/2" above the tank. I think I'll be lowering them. what does everyone think? is there a rule of thumb on wattage vs height? I have access to a light meter - not water proof though.

11/11/2008, 10:23 AM	#22
Jerm77 Registered Member Join Date: Nov 2008 Location: NORCAL Posts: 499	day 4 turned on the actinics last night. I have the lights about 9 1/2" above the tank. I think I'll be lowering them. what does everyone think? is there a rule of thumb on wattage vs height? I have access to a light meter - not water proof though.