The SunSun HW-602B multi-stage canister filter is ideal for tanks up to 20 gallon. It handles up to 106 gallons per hour. The SunSun HW-602B includes filter pads, hoses and all the parts you need to get started. There are space above and below filter pads which you can add filtration media such as activated carbons, ceramic rings or bio-balls (sold separately) to achieve excellent mechanical, chemical, and biological filtration. To siphon water into the filter, simply fill the filter with water and turn the power on. The SunSun HW-602 can also be use as pre-filter for other SunSun canister filters.

Product description:     

• Good for up to 20 gallon fish tanks
• Dimension: 5.7" L X 5.7" W X 10" H
• Flow rate: 106 GPH (400L/hr)
• Pump Power: 6W
• Voltage: 220-240V
• Additional media can be put in space above and below filter pads
• Capable of mechanical, biological, and chemical filtration
• Easy installation, no messy assembly
• Includes filter pads, hoses and all parts to get started
• Suitable for freshwater and marin
• This system consists of pump.

Difference between HW-602B and HW-603B is in size. 

HW602B: 5.7" L X 5.7" W X 10" H

HW603B: 6.5" L X 6.5" W X 11" H

Package Included:         

• 1 x  Sunsun HW-602B External Filter