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Old 09-07-2005, 09:39 PM   #1
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Reef Lighting, how many watts per gallon?

How many watts per gallon to keep a healthy reef set up?
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Old 09-07-2005, 11:12 PM   #2
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they say 6-8 watts per gallon, but different lights have different lumen output so the real question is how many lumens per gallon and at what light spectrum?

say you use 48" VHOs (110Watts) rated at 5500 lumens then you decide on VHO internally reflected at 40% more output say 7700 lumens and you have a 110 gallon tank then at 6-8 watts/ gal you would need 6-8 lights giving you from 33,000 to 61600 lumens and burning 660 to 880 watts of power.

T5HO burn at 54 watts and 5000 lumens and with their special 9 bend reflector that is advertised at 300% increase in output gives you 15,000 lumens per bulb at 54 watts instead of 7700 lumens at 110 watts per bulb.


61600/15000= about 4 T5HO bulbs with a total of 216 watts of power instead of 8 bulbs at 880 watts of power. Also T5HOs reported to last 18-24 months and VHO 8-12.

P.S. metal haildes follow a different set of rules based on the depth of your tank. mainly 1 every 24x24" square and the deeper the tank the more power you need.

have fun shopping until your head explodes and then just punt, guess, experiment and spend spend spend.
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Old 09-08-2005, 12:40 AM   #3
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oh lord. im more confused than i ever was.
thanks alot..... i think... lol
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Old 09-08-2005, 08:13 AM   #4
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What sized tank you trying to outfit?
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Old 09-09-2005, 01:19 AM   #5
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Yeah, too much information for your needs. In addition to the tank size, what animals would you like to keep (SPS, LPS, softies, etc.)?
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Old 09-09-2005, 10:54 AM   #6
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ok....from what i researched...and i did alot before buyin
but wattage doesnt necessariary judge what u need...you really to decide on what u want in ur tank and size of the tank...if u have a tnak over 24 tall/height then u probably need to consider MH....otherwise to save u money u can go with PC or VHO...i like VHO over PC due to the fact that i have a 48 " long tank and i would need alot of PC to get the same wattage of 4 VHO bulbs...and Im no authority on this but 4 VHO bulbs in my tnak Im sure will allow me to get basically anything I need and I got my 1st retro set of dual VHO with bulbs for about 150....so total $300 ifnt bad for 440 watts of lights...and my tank is only 18" tall so its works for me. Pplus since my hood is a custom hood and itsnt that tall....i cant go with MH due to a serious heat issue....plus living in FLa doesnt help. VHO stay pretty cool
hope that helps....
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Old 09-10-2005, 03:34 AM   #7
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my tank is 90 gallons and only 20 inches high.
I want to keep a australian sea apple and some anemone.
And i dont know what else yet.
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Old 09-10-2005, 03:52 AM   #8
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Is this good enough? should i buy this when it comes in stock or do i need more power?
http://aquatraders.com/index.asp?Pag...ROD&ProdID=149
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Old 09-10-2005, 10:00 AM   #9
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I have not had a good experience with Aquatraders. Their products are cheaply made and their customer service is close to non-existent. What good is a cheap price if it doesn't work.

Go with a quality company like hellolights.com or CustomAquatics or PM Darin at CaptiveReefs to see what he recommends.
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Old 09-10-2005, 02:01 PM   #10
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ok thanks for the advice.
So i shouldnt get there protein skimer either? lol
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