Coralife 05692 Pure-Flo II 50-Gallon Per Day 4 Stage RO/DI System Usable with chlorinated and well-water sources. Great for freshwater or saltwater aquariums 50 gallons per day TFC(Thin Film Composite) Membrane. Wall Mountable Remove hardness, heavy metals, toxins. 1 Micron Filter Cartridge. Mixed Bed Deionization Cartridge Includes clear filter canisters, cartridges and faucet attachments. Carbon Block Cartridge Please refer the Installation Manual in the Product Details Section for Installation details and Product Warranty Information