The Reef Octopus BR3000SS Space Saver BioPellet Reactor is the largest in the all-in-one BR-SS line, built for reef systems with substantial biopellet media volumes. The same integrated water blaster pump handles direct injection into the chamber, so there's no separate feed pump to source or plumb. Best for: larger reef systems wanting maximum media capacity in a self-contained reactor Setup: all-in-one — integrated pump included, no external feed pump required Design: no center pipe for easy lid-off refills, rigid anti-leak sieve plate, cover installs in 4 orientations As the top of the Space Saver line, the 3000SS is the pick when your tank's bioload calls for a large biopellet charge but you still want the plug-and-play simplicity of a built-in pump.Compatible replacement parts: integrated pump kits and sieve plates for the BR3000SS.