175 w MH over 20 gal?

Brack-Man · 04/28/2007, 09:25 AM

Putting 1- 175watt MH 15000K over my 20 gal mixed (sps,lps & softies) reef tank, trying to get an idea of how high above the surface over the water it should be so I can build a new canopy for it today.

Thanks in advance.
BM

Chrismo · 04/29/2007, 10:39 AM

Personally I had my 175w about 6" over my tank. I know many people keep them higher to avoid splashing, but I never found it a problem.
At one point I put 2 175w bulbs over that tank, and it did well, though on hot days I would have to turn one off.

Chris

Rich_1833 · 04/29/2007, 11:48 AM

I have a PFO 175w MH that is about 4-5 inches from the water. The reflector is about 1- 1.5 inch above the water. I wipe it down about once a week. Its just part of the water change now.

04/28/2007, 09:25 AM	#1
Brack-Man Registered Member Join Date: Apr 2006 Location: Birmingham,Al Posts: 29	175 w MH over 20 gal? Putting 1- 175watt MH 15000K over my 20 gal mixed (sps,lps & softies) reef tank, trying to get an idea of how high above the surface over the water it should be so I can build a new canopy for it today. Thanks in advance. BM

04/29/2007, 10:39 AM	#2
Chrismo Premium Member Join Date: Apr 2002 Location: Toronto Canada Posts: 416	Personally I had my 175w about 6" over my tank. I know many people keep them higher to avoid splashing, but I never found it a problem. At one point I put 2 175w bulbs over that tank, and it did well, though on hot days I would have to turn one off. Chris __________________ Just mind your water and your fish will mind themselves. Current Tank Info: 157g

04/29/2007, 11:48 AM	#3
Rich_1833 Premium Member Join Date: Mar 2007 Location: Mascoutah Ill ( near SAB) Posts: 357	I have a PFO 175w MH that is about 4-5 inches from the water. The reflector is about 1- 1.5 inch above the water. I wipe it down about once a week. Its just part of the water change now.