Hi, new to hobby, 55g tank.
I own a 55g tank with the API Nexx canister filter system.
I just got the new filter, I like it because it's very easy to maintain and clean. Also if I decide to upgrade, all you have to do is buy the extension and add it on, increasing the power from 55g to 100g rated.
In my tank I have an Oscar named Steezy, a common pleco and a bichir eel. It's strange though, the oscar killed his tankmate oscar before they even got to 3 inches, but he leaves the eel alone. The eel can totally fit into his mouth, but they will both be eating at the same time and he completely gets along with him! The pleco on the other hand, stays hidden most of the time until night time so the oscar doesn't beat him up.
Anyways... I just got this new filter not too long ago, and the only problem I'm having is lack of oxygen in the water. the circulation underneath the surface is pretty good, but the surface itself is quite calm. I'm actually going to be picking up an air pump tonight, I can tell Steez is actually breathing a lot harder than normal, and going to the surface a bit. This only really started after getting the new filter, because it lets the new water back in under the surface, so it's not creating any water agitation. I think i'm just going to buy two separate 20-30g rated air pumps and place them on both sides, I think it would look cool!
I'm going to get some pictures posted.
Please give me and recommendations and/or advice that you would like!