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Old 01-12-2013, 02:42 AM   #1
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I'm building a light for a 20 gallon salt water tank. Its going to have
4 -18" T8 bulbs
I have found 3 bulbs and I don't know which one to use


ZooMed Coral Sun
ZooMed Ocean Sun 10,000k
ZooMed Reef Sun 50/50

Our could I get by with 2 bulbs instead of 4

Or would a marineland double bright led light work

I'm planning on having low to medium light coral and something for clownfish to host with

Ok also found a nova extreme slr t5
saltwater light that comes with 2 t5ho bulbs one is a 24w 10,000k and a 24w 460nm actinic bulb for $75 bucks
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Old 01-12-2013, 09:45 AM   #2
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You lighting needs to support what you plan to have in your system.

Determine what route you are going with your tank and then get lighting to support that decision.
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Old 01-12-2013, 12:13 PM   #3
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I want low to medium light coral. Clown fish maybe frog spawn. I Dobby know what you're of lighting I need that's why I am asking
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Old 01-12-2013, 02:10 PM   #4
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4 bulb t5, one taotronics LED module, or a 150-250w MH will give you the options to do whatever you want in a 20 gallon.
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Old 01-12-2013, 02:19 PM   #5
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I heard themetal halide bulbs get real hot?
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Old 01-12-2013, 02:21 PM   #6
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They do. LEDs are the best option imo but everyone has there own opinion on lighting.
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Old 01-12-2013, 02:24 PM   #7
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MH lights DO get hot but will pretty much support anything that needs light.
T8 and Marineland LEDs are the opposite and will not support any corals.
T5 s will support many corals and my 4 bulb system has done my montipora very well. It would be an option for you I think.
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Old 01-12-2013, 02:30 PM   #8
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I am looking to see if I can buy a 4 bulb t5 ballast. I'm wanting to make my own hood
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