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Old 05-21-2004, 01:05 PM   #1
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20 gallon reef question.

Hi all,
I recently set up a 20 gallon reef aquarium. It is still in the cycling process, but I have a question about powerheads. I am going to stock it with corals in the future when the time is right, and at the moment I have 1 marineland powerhead 550 for current. Will this be sufficient, or should I ad another one on the other side of the aquarium? Thanks in advance for the reply.


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Old 05-21-2004, 02:19 PM   #2
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What kind of corals are you going to try and keep? For a 20G you could add two high current powerheads and some strong lighting for SPS, or leave the stock NO and a low current powerhead for shrooms and a couple other low light corals.
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Old 05-22-2004, 12:33 PM   #3
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I am very new to this hobby, so I am not sure yet what corals I will be adding. I was just wondering if 2 powerheads are too much for a 20 gallon aquarium. I am still doing research on different types of corals and anenomies. My aquarium is still in break-in period. I do have 2 true clown fish in there at the moment and they are thriving.



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Old 05-22-2004, 02:36 PM   #4
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I think mostly the problem with one powerhead is that it is only going to shoot water in one direction (probably).

Better to have 2 x 300gphs...than 1 x 600gph.

Get at least two and aim them opposite each other.
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Old 05-25-2004, 11:44 AM   #5
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SO if I have 2 x 550 powerheads, it will be ok? Will it stress out the 2 clownfish that I currently have? Or will they be ok with the high current?
Thanks in advance.
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Old 05-25-2004, 11:59 AM   #6
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The 550 only puts out 145GPH so two in a 20 will be fine. I wouldnt classify that as high current.
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