Hey all, I plan on running a 40g breeder, under-mildly stocked. I’ve never ran sponge filters before but due to the fact I’m gonna have floating plants,shrimp, and fry Id like the gentler flow and extra biological filtration.
I plan on buying the large aquarium co op one(with the airstone inside), but I’m a little confused. How powerful of an air pump should I get? It’s not like a HOB where the GPH is clearly there. I just have to guess? I mean I don’t doubt it’ll be strong enough but still. Some people also recommended 2 large sponge filters for a 40g, even though the filter itself is rated for 40g and up. What do you guys recommend? Ive got no idea as to what air pump to get, and whether I should get 1 or 2. Thank you for any help in advance.