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lighting a 125g tank

988 Views 3 Replies 4 Participants Last post by  Hoppy
I'm wondering my best options on lighting my 125g tank. 72"L x 18"D x 22"Tall

I'm looking to be into the med/high lighting area.

I was thinking 3' x 2 t5HO so how many would I need.
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On my own 125, I got a Catalina 48" 4x54w fixture because it is such a great price. It works really well, but if I had the money for it, a 72" 4x80w fixture would be my choice now. But 2 36" 4x39w would work, but not as pretty. I haven't looked at prices everywhere, but at Catalina, the 72" is cheaper than 2 36" fixtures.
I have to agree with the above post. Fixtures with 4 bulbs running the length of the tank would be best and I am very pleased with my Catalina light.
I think the best way to light that tank is to get a 4 bulb 72 inch fixture, too, but I would definitely hang the light above the tank so I could raise it to lower the light intensity. Raising it 6-10 inches would probably be about right. The 18 inch front to back depth makes it hard to get uniform light on the substrate without multiple fixtures separated by a few inches, or by raising the fixture so the light spreads out more.
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