Hang on Back NW Skimmer With Refugium:
BH-100R
Pump: Resun King-2 20W
Size: 355x85x470mm
Tank size: up to 350L
Hang on Back Bubble King Skimmer:
BH-300F
Pumps: 2 x Resun King-2/ 2x20w
Size: 380x90x560mm
Tank size: up to 500L
Hang on Back Sulfur Denitrator:
SNF-70H
Size: Φ70x400mm
Tank size: up to 400L
Hang on Back Calcium Reactor:
CR-70H
Size: Φ70x400mm
Tank size: up to 300L
PS: Reef Octopus are hot in Japan now.
http://www.e-lss.jp
http://www.e-lss.jp/sho-hin/reefoct_crh.html