coral flow

Hey! Long time lurker, first time account creator and poster. I've been running my Fluval Evo 13.5g for about 6 months, and had corals and fish for 4. Whenever the powerhead is on, my clown stays strictly along the overflow/sump wall of the tank, and my yellow watchman goby stays in his cave...

Hi! I am about two months into my biocube 32 and have a few soft corals and one candy cane coral. They seems to do well when my return pump is off, they open up and are full, but shrink when it is on. I’ve tried to reposition the corals and the pump direction of flow via the return outlet, but...