How high should duel 400watt mh be above water?

corey c · 10/07/2009, 04:31 PM

How high should duel 400watt mh be above water? 225 gal tank 72lx24wx30t water is 29 3/4 inch deep ? Im using 1 6500k and 1 14000k also 2 uv 72" vho super atinics.

corey c · 10/07/2009, 06:25 PM

Also a bad pic of my ro system and 75 GAL sump will get better pics soon of sump/ refugium it is almost done will finish filling up in a week or so also half and half pics of my 90 everything going in the 225 on one side other side is for acro i hope

surfjeepzx · 10/07/2009, 06:40 PM

I have mine at 16". VHO's between them and the water at 6".

corey c · 10/07/2009, 07:08 PM

Does 9 inches from the top of water sound to close tank is 30 in deep

downhillbiker · 10/07/2009, 07:19 PM

My reflectors are 4" from water surface and the bulb is about 9" from water surface. I get great light and dont get heat issues. If my sump weren't in the basement I might have heating issues, but dont know. I use 2x400w radiums powered by pfo ballast in lumenmax elite reflectors.

corey c · 10/07/2009, 07:31 PM

Mine is the same 9 inches off the water and i have the same setup pfo just using different bulbs thanks

10/07/2009, 07:08 PM	#4
corey c Registered Member Join Date: Jul 2009 Location: eastern NC Posts: 64	Does 9 inches from the top of water sound to close tank is 30 in deep __________________ triggerman77 Current Tank Info: 220g shallow mixed reef, 225 fowlrW/ 75g sump, 150g not sure FS 30g cube, 26g bow front

10/07/2009, 07:19 PM	#5
downhillbiker Registered Member Join Date: Feb 2008 Location: Salt Lake City, Utah Posts: 2,831	My reflectors are 4" from water surface and the bulb is about 9" from water surface. I get great light and dont get heat issues. If my sump weren't in the basement I might have heating issues, but dont know. I use 2x400w radiums powered by pfo ballast in lumenmax elite reflectors. __________________ The friendliest GIANT you'll ever meet. Current Tank Info: 200g Marineland Deep Dimension (Lumenmax Reflectors/Dual PFO 400w/Radium 20K) and 2xFrag Tanks (One TEK T5 fixture and one MH, Galaxy/Phoenix) on same system w/100g sump w/6"x100g DSB, AquaC EV-1000 Skimmer, Reeflo Barracuda return pump

10/07/2009, 07:31 PM	#6
corey c Registered Member Join Date: Jul 2009 Location: eastern NC Posts: 64	Mine is the same 9 inches off the water and i have the same setup pfo just using different bulbs thanks __________________ triggerman77 Current Tank Info: 220g shallow mixed reef, 225 fowlrW/ 75g sump, 150g not sure FS 30g cube, 26g bow front

10/07/2009, 06:40 PM	#3
surfjeepzx Registered Member Join Date: Mar 2005 Location: Wilbur by the Sea, FL Posts: 842	I have mine at 16". VHO's between them and the water at 6".