im going to university this fall, leaving an abusive household. the absolute most i can go home is once a month. is it possible to get away with a water change (as much water as possible, replacing filter media as needed) once a month. i would do up to 2/3 of the water, wipe down the sides, etc. he’s in a 20 gal. if not, i will bring my black moor back to the store, but i’m really hoping that’s not necessary because it would create a lot of drama in my abusive household that i’m not equipped to deal with.