I have a NextReef MR1 reactor (have a brand new set of sponges and new O ring still in the package) and Avast Marine Kalk stirrer for sale. Technical Data for Kalk Stirrer
Tank Rating: 400 gallons
Output capacity: 7 Gallons/day
Footprint: 5.5" x 5.5"
Height: 21"
Reactor $60 Kalk stirrer $80 PM or text me at 210-316-6047