The SunSun HW-603 multi-stage canister filter is ideal for fish tanks and comes with filter pads, hoses, and all the parts you need to get started. To siphon water into the filter, simply fill the filter with water and turn the power on. SunSun HW-603 can also be used as a pre-filter for other SunSun canister filters. 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 marine. This system consists of a pump