Advanced Algae Reactor for Growing Macro-Algae Use to reduce nitrates and phosphates in aquarium Double sided Aquaray lighting board included Compact design Use internally or externally The light incorporates a custom-engineered light spectrum developed alongside BioLumen Lighting to offer the most efficient photosynthetic processes to promote optimum algae growth inside the reactor. Advanced, compact reactors specifically designed to grow macro-algae. This macro-algae can be used to reduce unwanted nutrients such as nitrate and phosphate from your reef aquarium and also help improve water quality Includes a high performance, double-sided LED board using AquaRay technology and Samsung LEDs, with high PUR* and low power Versatile compact design allows the reactor to be installed internally in a sump or aquarium or externally as a stand-alone reactor Easily accessible for simple harvesting of algae, simply unscrew and pull the lid up Includes pipework and fittings NB: For best results operate the Reef Bio-Gro 2.0 during periods when the aquarium lights are switched off *PUR (photosynthetically usable radiation) will vary based on species of algae kept, however spectrum peaks are designed to mimic the photosynthetic needs of most algaes. Designed for reef aquaria Model: Reef Bio-Gro 2.0 M Volume: 8.7l Inlet/Outlet: 18mm 9LED power: 14W Dimensions: 230 x 200 x 565mm