SUNSUN HW-704B 9W UV External Filter

The SUNSUN HW-704B is an external filter designed for freshwater and marine aquariums with a capacity of up to 600 liters. The unit offers a flow rate of 2000 l/h and is equipped with an integrated 9W UV-C lamp that helps maintain water clarity. The four-stage filtration system allows for the use of various filter media, and the large housing accommodates a set of filter baskets for mechanical, biological, and chemical filtration. Thanks to swivel hose connections and the ability to place the filter next to or under the aquarium, it can be easily adapted to the available space.

The HW-704B model uses four filtration stages to effectively remove contaminants from the water. The kit includes filter media such as sponges, filter floss, ceramic rings, and bio balls that provide a habitat for beneficial filter bacteria. The filter baskets can be configured according to the tank’s needs, adjusting the type of cartridges used to the fish and plant population. The use of an easily accessible pre-filter protects the deeper layers of media from clogging with larger contaminants and facilitates regular maintenance.

The most important feature distinguishing the HW-704B model is its integrated 9 W UV-C lamp. Water flowing through the UV chamber is exposed to radiation that helps limit the growth of algae, bacteria, and other microorganisms suspended in the water. This allows biological contaminants to be more easily captured by the remaining filter media. The manufacturer estimates the lamp’s lifespan at approximately 7,000–10,000 hours of operation and recommends periodic replacement of the lamp and cleaning of the quartz sleeve.

The filter is equipped with a manual pump to facilitate initial startup and system venting. A multifunctional valve with a quick-connect fitting allows hoses to be disconnected without draining the entire filter, which streamlines maintenance. 360° swivel hose connections allow for convenient installation even in confined spaces. Rubber shock-absorbing feet help dampen vibrations generated by the powerful pump, and the ceramic impeller shaft ensures stable operation of the filtration system.

Claim orders from Stores

You can claim your purchased items within 1 - 4 work days after making an order (if product is in local warehouse).

Please wait for an email notification regarding Your order status update.

Vilnius Store address: Vytenio g. 20, LT-03229 Vilnius, Lietuva

Kaunas Store address: Pramonės pr. 4D, LT-51329, Kaunas, Lietuva

Local delivery in Lithuania

Purchased items are delivered locally through Venipak service. Depending on availability of items, orders are processed within 1-3 work days. Orders made until 1AM are shipped the same day.

Local delivery  (1-4 w.d.) price for items of any size is through through courier service is 4.90€ (incl. VAT), if the amount of the shopping cart exceeds 150€ - delivery is free.

Local delivery price to Venipak parcel terminals (1-3w.d.) is 2.90€ incl. VAT, if the amount of the shopping cart exceeds 50€ - delivery is free.

Local delivery price to Omniva parcel terminals (1-3w.d.) is 3.90€ incl. VAT,if the amount of the shopping cart exceeds 70€ - delivery is free.

Payment on delivery (COD) +2.00€ (incl. VAT).

You can pay for the goods at the time of delivery to the courier in cash or by credit card. Payment to Omniva parcel terminals is only possible by bank card.

A separate delivery fee applies to oversized items, regardless of the amounts and conditions stated above.

International delivery pricing through courier service

International shipping prices depend on geographic location:

Latvia - 5.50€ (incl. VAT)

Estonia - 6.50€ (incl. VAT)

Paid orders of more than 150€ are shipped for free to Latvia and Estonia.

other countries - negiotiated individually.

International delivery pricing to Omniva/Venipak parcel terminals

Latvia - 6.00€ (incl. VAT)

Estonia - 8.50€ (incl. VAT)

Payments:

We accept payments via PayPal for orders over 20€.