I need a cheap powerful filter for my 20l
My 20l is cloudy and icky from the Flourite Black Sand and this Penguin 100b is not doing anything except making annoying trickling noises. I don't want to move my AQ70 over there yet because I'm too scared to leave my 10g filterless. Is there anything I can get that is cheap and powerful that will clear the tank up in a jiffy so I can start transferring things? Preferably something that I can get locally or from Amazon Prime. Thanks.
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