So I'm relatively new to the hobby, and I recently acquired a 75 gallon tank with a 15 gallon sump that does abt 450gph, along with a koralia evolution wave maker. I have some rocks in the tank with a sand substrate, and wanted to do a Tanganyika style tank. I settled on doing a community tank of cyprichromis leptosoma and neolamprologus similis. I'd just like to confirm first that this 90 gallon system is enough to handle a school of maybe around 12 cyprichromis and a colony of similis, as this is the first time I've gotten into cichlids and larger tanks. Any helpful advice would be appreciated.