# Hagen aquarium heater Marina Betta Kit 8W – compact submersible heater for small tanks

**URL:** https://aio.lv/en/product--hagen-ah-1829--12039638
**Data updated:** 2026-03-12 16:49 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** Hagen
**Manufacturer code:** AH-1829
**EAN:** 015561111829
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 16.49 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 13.63 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hagen-ah-1829--12039638

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Hagen Marina Betta Kit 8W is a compact submersible aquarium heater designed for small tanks and betta setups. With an 8-watt output it provides gentle, consistent heating suitable for nano and single-fish aquariums. The unit is intended to maintain stable water temperature, protect sensitive tropical species and integrate unobtrusively into planted or decorative aquaria.

## Long description

Hagen Marina Betta Kit 8W is a compact submersible heater designed specifically for small aquaria and betta setups. Its low-wattage design delivers gentle, consistent heating appropriate for nano tanks and single-fish bowls, helping to maintain stable water temperature for sensitive tropical species. The slim, unobtrusive form integrates easily into planted or decorative tanks without dominating the visual layout.
Advantages
The heater provides precise, low-power temperature control suitable for small volumes of water, reducing temperature swings and stress for fish. Its fully submersible construction and compact dimensions allow discreet placement near plants, ornaments or behind equipment. The simple construction minimizes maintenance and the unit is built to operate continuously at low output for steady thermal regulation.
Suitable for
Nano aquariums and small planted tanks
Betta fish bowls and single-fish setups
Seedling or quarantine tanks with limited water volume
Decorative desktop aquaria and enclosed display tanks
Key specifications
Power output: 8 W, designed for small-volume aquaria
Type: fully submersible glass/aluminum tube heater (compact form factor)
Installation: in-tank placement with suction cup or clip-compatible mount
Temperature control: low-wattage constant heat suitable for maintaining tropical temperatures in small tanks
Compatibility: suitable for freshwater ornamentals and sensitive tropical species requiring stable temperatures
How to use
Mount the heater inside the aquarium at a horizontal or vertical position where water circulation is present, using the supplied suction cup or clip. Set the aquarium to the target tropical temperature appropriate for your species and verify water temperature with a separate thermometer. Allow the heater to run and stabilize the tank temperature before introducing fish or after water changes. Do not operate the heater outside of water or when dry.
Usage recommendations
Monitor water temperature regularly with an accurate thermometer, especially in small tanks where temperature can change rapidly. Combine the heater with gentle circulation to ensure even heat distribution. Unplug the unit before removing it from the tank for maintenance and avoid sudden large water changes that can cause rapid temperature fluctuations.

## FAQ

### How much does the Hagen Marina Betta Kit 8W aquarium heater cost, and is it available for purchase?

The price is 16.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 23.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. 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/12039638/67526868_large.webp