A small algae eating blenny would do OK in there. There are quite a few to choose from.
Hi Andrew, I am with Kessil A360W and happy with it. So I would suggest you Kessil light but then this would probably be bias opinion as I've never had experience with Fluval.and what they say to use is the fluvial reef led 24" light
From what I understand and read/research so far, don't get your hope high about hosting between Anemone and Clowns. What I remember from the forum is "Clowns will host what they like to host".Do the maroons still host other anemone..