minimum distance for 250 hqi's?

jedininja

New member
It really depends on the size of your tank, how large of an area you want to light, and what you'll be keeping directly under the light.
 

jedininja

New member
I also have a 48inch tank, and for 2 hqi pendants to light the entire tank, the bottom of the pendants need to be at least 6 inches above the water line. And even then, i still get a dim area in the middle.
 

jedininja

New member
They are the old style PFO's. I'm upgrading to Lumenarcs though, so should get a better spread of light.
 

jedininja

New member
I would always give yourself a few extra inches if you are building the canopy so that you can make any adjustments that you need to.
 
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