could someone please explain all the typs of filters you can buy to-day and all the typs of filter media avaliable. a.t.m i have a mercanical filter with a bog standard sponge in it> is this...
i have a community tropical fish tank that has been running for about 6 months now and "dirt" has seemed to collect on my plants...at first i thought it was hair algae then i treated the water...
