Was thinking of a powerhead but wasnt sure if is overkill for a small tank. I do see the clowns swim where the water flows down a lot. Its a hob
that came with the set up got to look and see if can find all the specs for it, thats why thinking of upgrading filter too just cuz i know buying as a set normally they cut corners. How big do the horseshoe crabs get? I know ive seen a shell on the beach before that was the size of my foot. Didnt think they would get that large in captivity.