# Aquarium pump Hagen MARINA POMPKA 200 – model 03961, flow 25–225 L/h

**URL:** https://aio.lv/en/product--hagen-03961--8580274
**Data updated:** 2026-03-11 11:52 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** Hagen
**Manufacturer code:** 03961
**EAN:** 0015561111164
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Hagen MARINA POMPKA 200 aquarium pump (model 03961) is a compact water pump with an adjustable flow range of 25–225 L/h. Designed for circulating and filtering water in small tanks, it supports external or internal installation and is suitable for biological filtration, sponge filters, and gentle water movement for planted tanks or shrimp setups.

## Long description

Hagen MARINA POMPKA 200 (model 03961) is a compact aquarium pump designed for small tanks and delicate aquatic environments. With an adjustable flow range of 25–225 L/h, this pump supports gentle circulation, biological filtration and operation of sponge filters. It can be installed internally or externally depending on tank layout and filtration needs, offering quiet performance and adjustable output suitable for planted aquariums, shrimp tanks and small community setups.
Advantages
The pump provides an adjustable flow that allows precise control of water movement from very low to moderate rates, making it adaptable to a variety of small-aquarium applications. Its compact size and quiet operation reduce disturbance to inhabitants while saving space in or around the tank. The unit’s compatibility with sponge filters and biological filtration supports stable water quality by promoting slow, steady circulation. Installation flexibility permits internal or external placement to match individual aquarium designs.
Suitable for
Small freshwater aquariums and nano tanks
Planted tanks requiring gentle circulation
Shrimp tanks and other sensitive invertebrate setups
Driving sponge filters and small biological filter systems
Low-flow circulation and water exchange in refugiums or breeding boxes
Key specifications
Adjustable flow rate: 25–225 L/h
Compact footprint suitable for internal or external installation
Low-noise operation designed for minimal disturbance
Suitable flow range for sponge and biological filtration
Designed for small-volume aquarium environments
How to use
Mount the pump according to the chosen installation method: place it inside the aquarium on a stable surface or attach it externally as allowed by the tank configuration. Connect the outlet to tubing or directly to the filter media if using a sponge filter. Adjust the flow control to the required rate for your aquarium inhabitants—start at a low flow and increase gradually while observing fish, shrimp and plant responses. Regularly inspect the impeller and intake for debris and clean according to manufacturer guidance to maintain consistent performance.
Usage recommendations
For sensitive species and planted tanks, set the flow below the mid-range and monitor water movement to avoid uprooting plants or stressing invertebrates. Schedule periodic maintenance every few weeks or sooner in heavily stocked tanks to prevent clogging and ensure reliable circulation. When using externally, ensure all connections are secure and free of leaks.

## 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 Hagen 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 Hagen 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/8580274/51647652_large.webp