It’s a UNS 90L (36x12x12) ~21 gal. I drilled it for return and overflow. Return is from manifold of display tank sump and drain returns to one side of the Reefmat fleece roller w/ emerg drain just dumping into sump. It’s just an extension of the big tank system.
Thanks! The orphek clip-on filters on an iPhone 15. I’ve got a flipper magnetic magnifier and top down viewer in the mix too. My key factors are clean glass, if any angle from lens through glass and limited flow to get good focus.
