What would be a good HOB filter for a 20 gal goldfish tank? And how many could I keep in a tank that size??
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A smaller ac or a smaller penguin would do. You can always upgrade as fish grows. I think you should start with something bigger though, those 40 gallon breeders are cheap. And you could keep up to 2 fancies in it.
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I agree, starting with a larger tank is best. You'll get one, then somehow start getting more and more. But if you have space only for 20 that fluval should be good. I do prefer the ac110 for ease of cleaning though. Check out Kokos goldfish for good info regarding goldfish grooming. Be warned is a little more touchy feely then MFK but also a awesome forum. CheersView attachment 965929
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