My son wants to get a similar setup like the one I have, except my tank is larger. This will only be a temporary setup in the 20 gallon tank (perhaps a few months, max), but I'm wondering if he would be able to keep this list of fish/ inverts until he gets a bigger tank. The fish are: Two ocelleris clowns, a firefish, coral banded shrimp, brittle star and a CUC.
I'd be able to give him a few more LR
for the bioload. I'm just wondering if that tank size would be alright. If so, how often and how much water should be changed?