What size powerhead?

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Aquarium Advice Apprentice
Feb 8, 2012
Hi! I have a 29 gallon tank and I was wondering what size powerheads do I need? I was thinking a penguin powerhead, but what size? What powerheads do you recommend and what size?
What protein skimmers do you recommend too? I'm all new to this!
Is it possible to have a goby-only tank? If so, what gobies can go together? If not, what other fish can go in this 29 gallon tank?
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