HW‑304B – external UV filter for up to 600 litres
SunSun HW‑304B is an external canister filter with a 9 W UV-C lamp and a 2000 l/h flow, intended for aquariums…
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This external canister filter suits keepers running mid-sized tanks from 350 to 600 litres who need mechanical, biological and chemical filtration combined with water sterilisation in one unit. Its 2000 l/h flow and 9 W UV-C lamp address water clarity and microbial control without a separate sterilisER.
Why it matters
- The 9 W UV-C lamp sterilises the water passing through the unit, which is the main functional difference from a standard canister filter of this size.
- The bio-ceramic media and bioballs provide surface area for bacteria that reduce NH3, NH4 and NO2 levels, and the same media support plant nutrition.
- The aqua-stop valve shuts off the water flow to the hoses, so the hoses can be disconnected from the lid during maintenance.
- The pump has a ceramic impeller, which the manufacturer states is suitable for seawater use, and it runs inside a large, sealed lid that dampens its noise.
Specifications
- Flow rate: 2000 l/h
- Pump power: 55 W
- UV-C lamp power: 9 W
- External dimensions: 290 x 290 x 485 mm
- Power cable length: 1.8 m
- Recommended tank volume: 350 to 600 l
What it works with
The filter is designed for tanks in the 350 to 600 litre range, matching its 2000 l/h flow. Its media baskets accept the bio-ceramic, bioballs, activated carbon and mechanical sponge supplied with the unit, and the spray bar outlet can be adjusted to aerate the water in place of a separate air pump.
Technical specification
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Frequently asked questions
The manufacturer recommends it for aquariums from 350 to 600 litres. Its rated output is 2000 l/h.
Yes. The UV-C lamp is rated at 9 W and is meant to sterilise the water. The filter's total power consumption is 55 W.
Yes. The filter has an "aqua-stop" valve that blocks water flow from the filter into the hoses, so the hoses can be detached from the lid. The manufacturer says this is needed during all maintenance work.
The pump uses a ceramic impeller, which the manufacturer says makes it suitable for operation in seawater. The filter body and lid are made of ABS plastic.
It comes with bio-ceramics of different porosity, bio-balls, activated carbon and a sponge. The media baskets can hold any filter media you need for your tank.
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