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#1
08-19-2008, 01:59 AM
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For me, as close as possible while still able to work in and around the tank... my are about 3 inches above the canopy, so when the canopy is off, I have around a foot of space... I have clams and SPS, so want to make sure I get as much light as possible.
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#2
08-19-2008, 03:12 AM
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I use 250 HQI DE on a 120G with 24" depth. I run my lights at 9" above the water and My VHO's about 9" 1/2.
I go by how the light looks in the tank. If the the light is not coverring that area of the tank I rise the light. 
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120 G sps reef, looking to build bigger. 
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#3
08-19-2008, 03:21 AM
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On my 75g cube I have luminarc reflectors but the bulb itself is 6" away from the water surface.
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75g 24x30x24 w/external overflow 35 sump/fuge 250w Ice Cap MH with Radium 20k & Luminarc Reflector PS4 Return -PCI Chiller - WavySea 2 x Tunze 6101 H&S A150-2001 2 x Deltec Reactors Carbon/Phosban Profilux Plus II
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#4
08-19-2008, 03:43 AM
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I run my 250 about ten inch from the water and my 175 about one inch.
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150 Gal system 3'x3' 400W M/H, Bekett skimmer, Dart return,1/4 HP Chiller 180 Gal Drop tank, LED lights, Bubble master 250 skimmer,Hammerhead on a closed loop, Speed wave return.
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#6
08-19-2008, 04:48 PM
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Are you not running a 250W DE If you are I think you are going to have heat issues regardless.
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150 Gal system 3'x3' 400W M/H, Bekett skimmer, Dart return,1/4 HP Chiller 180 Gal Drop tank, LED lights, Bubble master 250 skimmer,Hammerhead on a closed loop, Speed wave return.
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#7
08-19-2008, 10:56 PM
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It is SE.. I don't really have much of a heat issue right now. But it is in a quickly rigged hood which is wide open with a fan blowing on the top..
The canopy I plan on making will have 4x 6cm fans on the top of the canopy to remove the hot air.. I am hoping that will be sufficient in removing most of the heat issues.
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Chad
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