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making a sponge not float
I was interested in making a simple sponge filter to be run in my main tank and used for QT purposes. I assembled it last night and tried submerging it - I'm assuming I'm supposed to cover it with gravel in order to get it to stay on the bottom? Is there anything else I can do besides that? I wanted to get the new filter ready so I can set up the QT with dechlorinated water and have a filter all ready - my main tank is 46gal - QT tank is 10. I bought a utility sponge from Home Depot and cut it in half - is it too big? Should I make it thinner?
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46 gallon bowed fw: 6 neon tetras, 2 spotted corys, 3 black skirt tetras, 2 zebra danios & 1 white clouds - still stocking!
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