Good to know! My clown last night was the same and sleeping near the intake too. This morning I wasn’t sure what I’d find but all good expect a hermit crab who’s shell got caught upright in the rocks and didn’t make itLooks good!
may clown sleeps up near the intake. I don’t use an extra guard. I wouldn’t worry about it. Some gobies and smaller fish will make their way in there sometimes , but I don’t think your clowns will.