300 gallon clarity plus aquarium. Has dual overflow boxes. Each has one 1″ bulkhead for overflow rate and one 3/4″ bulkhead for return from pump. Is drilled also for closed loop system. Can be blocked off if not needed. Price is tank only. Have bulkheads and all tops! Can build in wall or build custom stand any height, any color for additional cost. Set up and plumbing specialist too! Have pumps, sumps/refugium filters, liverock and substrates.