SunSun Health Water 2 (HW-702A) - canister filter 1000 l/h

About the new filter SunSun HW-702A and the old HW series
The HW series (HW-302, 303, and 304) is currently the best-selling external filter not only in Poland. Its popularity is due to its low price combined with good quality and very large capacity. The manufacturer SunSun is now introducing a new series of Health Water filters (702, 703, and 704) as an upgrade to the earlier HW models. The filters are based on proven technology and a design tested over the years by hundreds of thousands of users. The new HW still provides exceptional filtration due to its large capacity, but its design has been improved and the filter motor has been changed.

What's new? What are the differences between the new and old HW?
Right from the first contact, there is a noticeable difference in the appearance of the filter. The new exterior shape results from the following changes made to the design:

- Guides, so you can always close the filter correctly
The possibility of leaking from the main seal has been eliminated, which was caused by the angular placement of the lid, meaning the filter could be closed at an angle away from the correct radius in the horizontal plane. The new SunSun HW-702A filter has special guides that ensure the filter is closed in the correct position, thus eliminating the most common leaking problem that was essentially user error.

- Double bucket and reinforced walls
The main bucket - in other words, the container for filter media - has reinforcing columns. This solution has its reasons, as it provides the appropriate rigidity of the structure and durability. Additionally, it dampens vibrations, reducing the noise of the filter's operation.

- Stop air locking! Bubbles are only good in champagne
Over 90% of canister filters have a somewhat flawed design in the hand pump. It is meant to fill the filter and hoses and is supposed to serve to bleed the filter. Often, it is responsible for air locking in the filter. It literally becomes a place where air is trapped. This leads to clogs and manifests as continuous expelling of air. Pumping or shaking the filter helps little and this can last several days. Terrible!
The new HW-702A filter has avoided this problem through water flow channels and a different placement of the impeller. The air bubble no longer has its "safe" place and is immediately "expelled" by the filter.

- New energy-efficient motor
Energy consumption has been reduced by 20%. This is good news given the constantly rising electricity prices. You can save up to 40 PLN a year just on electricity!

- New inlet and outlet
This element has also been modernized. Both the inlet and outlet are equipped with a bracket for the edge of the aquarium. The package also includes suction cups for hoses and hose clamps, ensuring the durability of the installation.
Inlet: has modules that increase the length of the tube. Length ranges from 15 to 60 cm.
Outlet: rain bar. It has modules. Length ranges from 20 to 40 cm. The outlet is rotatable.


A large filter means better filtration.
"This has always been obvious to those who delved into aquarium knowledge."
It is not the brand, price, or praise from the manufacturer that makes a filter good. The rule is simple: the more media, the better the filter. It is worth noting that HW filters are among the largest on the market. Most manufacturers only increase the pump's power, which is pointless but looks better on paper and convinces uninformed customers. The filter should filter through filter media! And the pump's power should be appropriately matched. Too high water flow literally flushes the filter, preventing mechanical, biological, or chemical filtration.

Technical data:
- model/manufacturer name: SunSun HW-702A
- commercial name: Health Water 2
- pump power: 24 W
- pump capacity: 1000 l/h
- dedicated for aquarium: 200 l
- minimum aquarium: 72 l
- maximum aquarium: 300 l
- hose: diameter 16/22, length 2 x 200cm
- dimensions: 23x23x40 cm (total dimensions with hose adapters)