Quick question - did you have to cover the intake slots on yours? My 3 shrimp and few snails kept ending up in the back - I swapped white foam for black foam now and it looks a bit better but the surface scum still hangs out in the front area with the foam covering it... Do you have that issue?
I have a few fry in mine:
If you keep the water level low, the exposed height of the slots prevent my baby mollies and skirt tetras from getting sponged. Not that they cared if they end up on the sponge side.. they seem to enjoy picking at it.