noob

Hi All, Im a new member here joined via the ACA convention, but have been lurking on this board for a bit now. I have only been seriously in the hobby for about 2 years now. I am primarily interested in Apistos, and am currently raising a batch of juvie A. Baenschi that I was fortunate...

I have a Rena 300 air pump (manufacturer rated for 75 gallons - whatever that means) running 2 hydro V sponges. How can I tell if I am getting flow through the filters? Is this pump big enough? Each filter is in its own tank (1 20L, 1 29G). Is it possible to have too big a sponge filter on...