# HAPPET sponge filter U-JET3 for 50–100 L aquariums, aquarium filtration accessory

**URL:** https://aio.lv/en/product--happet-014214--12026741
**Data updated:** 2026-03-12 16:34 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** HAPPET
**Manufacturer code:** 014214
**EAN:** 5907708605993
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

HAPPET U-JET3 sponge filter designed for aquariums with 50–100 L capacity. This aquarium filtration accessory uses a sponge element to provide mechanical and biological filtration, supporting beneficial bacterial colonization and debris removal. Suitable for freshwater setups, breeding tanks, and shrimp or fry protection where gentle filtration and aeration are required.

## Long description

HAPPET sponge filter U-JET3 is designed for aquariums with a volume of 50–100 L. The compact filtration accessory combines a porous sponge element and a water flow regulator to deliver mechanical and biological filtration while maintaining gentle water movement. It supports colonization of nitrifying bacteria on the sponge surface, captures suspended particles and debris, and contributes to oxygenation when connected to an air pump or internal flow. The product is intended for freshwater aquaria, including breeding setups, shrimp tanks and fry protection where low suction and stable bacterial filtration are important.
Advantages
The U-JET3 sponge filter provides combined mechanical and biological filtration in a single unit, enabling continuous removal of particulate matter while promoting beneficial bacterial growth. Its sponge element is easy to rinse and replace, reducing maintenance time and preserving biological activity. The design produces mild water currents suitable for delicate inhabitants, and the unit can be used with a range of air pumps or small powerheads to adjust flow and aeration according to tank needs.
Suitable for (tasks / use cases)
Freshwater community aquariums of 50–100 L
Breeding tanks and fry protection where low suction is required
Shrimp and other small invertebrate tanks
Quarantine and hospital tanks requiring reliable biological filtration
Key specifications
Recommended aquarium volume: 50–100 litres
Filtration type: sponge (mechanical and biological)
Flow characteristics: gentle water movement suitable for small inhabitants
Compatibility: works with standard aquarium air pumps or small powerheads for circulation
Maintenance: removable sponge element for rinsing and replacement
How to use
Install the U-JET3 sponge filter in the aquarium at an appropriate location where the gentle flow will circulate water without stressing inhabitants. Connect the outlet to an air pump or compatible small powerhead according to the desired flow and aeration; adjust the pump output or position to obtain suitable water movement. Prime the unit if necessary and ensure the sponge is fully submerged. Perform periodic rinsing of the sponge in tank water to remove accumulated debris while preserving beneficial bacteria; replace the sponge element when it shows excessive wear or cannot be cleaned effectively.
Usage recommendations
For best results, pair the sponge filter with a low-noise air pump and avoid high-flow powerheads that may generate strong currents. When rinsing the sponge, use aquarium water rather than tap water to maintain biological colonization. Regular visual checks and gentle maintenance will keep filtration effective in breeding, shrimp and small-fish setups.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All HAPPET products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized HAPPET service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12026741/67514792_large.webp