Fluval U4 underwater Filter with three stage filtration are ideal for use in fresh marine or reptile environments. Stage 1 foam removes large particles. In Stage 2 the poly/carbon cartridge traps fine debris improves water clarity and removes impurities. In Stage 3 BIOMAX provides optimal biological filtration efficiency. Fluval U4 Underwater Filter Features and Benefits:. - Flip Top for quick and easy maintenance. - An adjustable 3 way flow for output flexibility. - Comes complete with 3 way Flow control with Adjustable Output 2 Foam Pads 2 Poly/carbon Cartridges 90 gram BIOMAX. - Works for freshwater marine or reptile environments. 4.6 length x 5.2 width x 14 height

• Filters debris and provides optimal biological filtration
• Simple to install and maintain
• Silent and efficient
• Ideal supplemental or stand-alone filter, or for installations where external filtration is not possible
• Comes with 3-Way flow control with adjustable output, 2-Foam pad, 2-Poly/carbon cartridges and 90-Grams BioMax; Ideal for 34-65-Gallon environments