Fishkeeper125 Posted November 6, 2020 Share Posted November 6, 2020 I'm planning on setting up a 29 gallon aquarium-moderately stocked, and I would like to know everybody's options-1 medium sponge filter or 2. Link to comment Share on other sites More sharing options...
tolstoy21 Posted November 6, 2020 Share Posted November 6, 2020 I use one medium coop sponge filter in my 29s. Occasionally i'll run a second, but that's just so i have a cycled sponge filter on-hand to jump start any new tanks. I don't run those secondaries out of necessity for the tank itself. 1 Link to comment Share on other sites More sharing options...
Paul Posted November 6, 2020 Share Posted November 6, 2020 I run 1 of the double sponge filters and a Penguin 275 Pro on my 29. The water is extremely clear. Link to comment Share on other sites More sharing options...
Alec2cool Posted November 6, 2020 Share Posted November 6, 2020 I've slowly been shrinking the amount of filtration I am using. My 55g is using one of the large filters rated for a 40g and I have had no problems. I'm sure the medium sized would do fine for your 29g aquarium. Link to comment Share on other sites More sharing options...
Daniel Posted November 6, 2020 Share Posted November 6, 2020 The only tanks I have filters in are the ones for the dirted tank project. I wouldn't have put sponge filters in there except that I wanted the aquariums to be set up like most people would set them up. The other 8 aquariums without filters stay clean and clear (green water aquarium excepted) and biologically support the fish properly. 1 Link to comment Share on other sites More sharing options...
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