I'm setting up a 10g quarantine tank for 4 upside down cats and a baby dwarf giraffe cat while I treat my cichlids with clout. I have an air stone and heater in the 10g but no established filter. Can I just stick my cylinder pre filter into the 10g with the air stone inside it as a make shift sponge filter? Or would it be better to just change a gallon of the water each day for the next week?
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DIY sponge filter?
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