Tropical Fish Forums

[OscarSam]

If you were going to keep 2 feeder goldfish in a 33 gallon tank longterm what would your suggestion be for a filter be?
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- Sometimes I don't know enough to know that I don't know -

[piranha]

I had 2 comets in a 30 gallon with a penguin 170.It was a Big mistake. Get a cannister.The bioload with goldfish is too great.

[Devs]

Hi, A recommended filter would be something that at least filter's 10 X's the size of your tank a 33 gal. would need at least a filter that has 330 gph(gallons per hour).Commons are great swimmer's,get awful large,and have mass amounts of waste,so I would go quite a lot bigger myself. The least I would do is an Emperor 400,or an Aquaclear 110(the old 500).I'd probably keep two on there myself.Of course,if you have the money,then I would definately look into the Cannister's.They're kind of pricey,but are great for waste producer's like Goldies.

[Oscer]

For my tanks that size I use a Cascade 300 (but you could get away with a 200, add more bio media) and a power head connected to a UGJ or just plane. If you don't mind paying for canister then that
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Years of fish keeping = Good advice