HW‑304A – external filter for up to 600 litres
SunSun HW‑304A is an external canister filter rated at 2000 l/h for aquariums of 350 to 600 litres. It has…
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The HW-304A is an external canister filter for aquarists with large tanks in the 350 to 600 litre range, where a high flow rate and a reliable, long-running pump matter most. Its 2000 l/h rating and sealed, multi-clamp housing address the common problems of leaks, pump noise and interrupted operation during maintenance.
Why it matters
- The housing and lid are made from ABS, a dense plastic that the manufacturer describes as resistant to cracking and mechanical damage.
- The lid is secured by two pairs of clamps: one pair uses a lever action to tighten the seal, and the other uses snap latches that keep the lid closed when the filled unit is lifted by its lid.
- The aqua-stop valve blocks water flow from the filter into the hoses, so the hoses can be disconnected from the lid during cleaning without draining the filter.
- The pump has a ceramic impeller, which the manufacturer states is suitable for seawater. The pump sits inside a large sealed lid that dampens its noise, and rubber feet absorb vibration.
Specifications
- Flow rate: 2000 l/h
- Recommended tank volume: 350 to 600 l
- Power: 55 W
- External dimensions: 290 x 290 x 485 mm
- Weight: 6 kg
- Power cable length: 1.8 m
- Maximum lift height: 2.5 m
What it works with
The filter is designed for freshwater and marine aquariums in the 350 to 600 litre range, paired with a pump rated for that volume. The outlet can be reconfigured with the included tubes and fittings, and the spray bar outlet aerates the water, so it can take the place of a separate air pump or air stones in that tank.
Technical specification
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Frequently asked questions
The filter is recommended for tanks from 350 to 600 liters and has a rated flow of 2000 l/h. A 500-liter tank falls within that recommended range.
The pump runs on a ceramic impeller, which the manufacturer states allows operation in seawater. The pump is enclosed in a sealed, large filter lid that also dampens its noise.
The filter has an "aqua-stop" valve that blocks water flowing from the filter into the hoses. It lets you disconnect the hoses from the lid during maintenance without the water running out.
The technical data gives a maximum water lift of 2.5 m and a power cable length of 1.8 m. The power rating is 55 W.
The outlet uses a spray bar that aerates the water, and the manufacturer says it can replace popular air stones. The outlet can also be adjusted with a range of tubes and fittings.
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