I think 15 neons would be a bit much. Plus, I would need to rebuild the strainer on the overflow bulkhead fitting. Right now, the holes are way too big for neons.
Yeah, I guess its a little overfiltered. Lol.
1g tank, 20-30g wet/dry, 60gph return pump, and a 20gph refiltration system inside the sump. Lol.