I got two clowns about 2 weeks ago which are doing great but they are always up behind my powerhead so we never see them I don't know if they are to young to start hosting but that's the way they are acting I removed the powerhead to see how they would act and they keep hanging out up at the top of the water where the powerhead was so we still can't see them should I leave the powerhead out for awhile I have plenty of flow with another powerhead on the other side of the tank and what comes back in from the refugium and I also turned on my canister filter also for added flow so should I keep the powerhead out for awhile to see if they will host to something else or just put it back in?