Juwel FilterGrid Unit Cichlid Supply 230V 50Hz Cooling Power Consumption Supply 230V 50Hz Cooling Power Consumption 270 w Ecological Refrigerant R290 Min and Max Flow Rate 500 l h – 800 l h Tank Size up to 1000 l Dimensions (millimetres) 310 (w) x 310 (d) x 458 (h) Dimensions (inches) 12 This is a scraper to remove algae on the aquarium glass surface now thanks to this filter grids special shape it creates a reduction in the size of the intake slots both at the top and the sides so aquarists with shrimp tanks or small species of fish can reduce the likely hood for fish and shrimp being caught The carefully coordinated components blend perfectly with the design of the Juwel Bioflow Filter with no reductions of the current flow rate or filtering performance