lumenbright and vho height

[jgs107]

ok so i just got a set of the large lumen bright reflectors and im running dual 250 watt bulbs on them.also i picked up an icecap 660 with 4 vhos,i built my canopy at 15 inches and have the reflectors on top sitting 15 inches off the water and then i have my vhos in the top of the canopy also.my quesiton is what is the ideal height for these lights.i heard somewhere to put the reflectors at 15 inches to be ideal.wasnt sure what the best height for the vhos was though.any help would be appreciated.thanks

jason

 

[octavioromo]

I have lumen brights over my tank. They are GREAT reflectors all of the light goes right into my tank. your canopy seems mighty short. i don't have a canopy on my tank but you want to have those lumen brights pretty high. You want to have the distance from the surface of water to the bulb at minimum 12 inches to 14 and up is recommend. i just recently had to raise them 2 inches. I had them at 14" and some of my sps were starting to lighten up, they are halfway down into my tank(about a foot from the water surface) now they are 16" bulb to water surface.

 

[jgs107]

trust me they are every bit of 17" off the water.total height of my conopy is 15" and i have the reflectors on top of the canopy.

 

[sw500]

I run mine 18" from bulb to top of water.

 

[jgs107]

what about the vhos.is there a better height for them