Help meh please..
Whats the average price for a carbon filter for a 20 gallon tank? I found one for 38.00 ringgit, but not sure if thats overpriced? Never used carbon filter before. I want to upgrade from my air filter(the filter using the sponge and has air blow from it old school as i say). Oh and how much will it cost the cartrige? Thanks if you could help.
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