I have a 7x2.5x2 260 gal tank and was wondering if it would be possibly to keep a single male hystrix with tank mates? It's running two 550gph cannisters, a 200gph cannister and a Fluval FX6? I'm asking because a few people have told me that I need a sump to keep rays due to their large bioload.. Tank mates would be a senegal bichir, an ornate bichir, fire eel, an oscar and a vieja synspilum.