I think this is a 37 gallon tank I’m working with ( I haven’t put any water in it to know for sure) I got a canister filter on hand but I’m thinking about going with 2 HOBs instead I don’t have a light yet and I just bought a jerepet 2100 GPH DC wavemaker I really just been slowly buying the things I need I know patience is a big thing with this hobby. I also have a 75 Gallon tank that when this build is finish and I got the hang of things everything will be going in.