# Aquarium Heater Diversa Thermoplus 25W — Submersible Heater for Small Tanks

**URL:** https://aio.lv/en/product--diversa-5908222173098--12026500
**Data updated:** 2026-03-12 16:34 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** Diversa
**Manufacturer code:** 5908222173098
**EAN:** 5908222173098
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 19.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 16.52 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--diversa-5908222173098--12026500

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Diversa Thermoplus 25W is a submersible aquarium heater designed to maintain stable water temperature in small aquaria. With 25 watts of power, it provides gentle, continuous heating suitable for tropical fish tanks, shrimp setups, or fry rearing. The compact unit fits easily inside a tank, supports constant temperature control, and is intended for everyday use to protect aquatic life from temperature fluctuations.

## Long description

Diversa Thermoplus 25W is a compact submersible aquarium heater designed to keep water temperature stable in small tanks. The unit provides gentle, continuous heating at 25 watts, suitable for maintaining tropical conditions in nano-aquaria, shrimp tanks, or fry rearing setups. The heater's size and submersible construction allow discreet placement inside the aquarium, enabling everyday use to reduce temperature fluctuations and support aquatic life.
Advantages
The Diversa Thermoplus 25W delivers steady heat output with low power consumption, reducing temperature swings that can stress fish and invertebrates. Its compact, fully submersible design fits easily in small tanks and aquascapes. The heater is built for continuous operation and provides reliable, even warming across the aquarium volume, helping to maintain a consistent environment for sensitive species.
Suitable for
 Small tropical freshwater aquaria and nano tanks
 Shrimp and invertebrate setups requiring gentle heating
 Fry rearing and breeding tanks with stable temperature needs
 Desktop aquariums and planted nano systems
Key specifications
 Power: 25 W
 Mounting: fully submersible design for in-tank placement
 Suitable tank size: small aquaria and nano tanks (model optimized for low-volume systems)
 Operation: continuous, for everyday use to maintain stable temperature
 Material: corrosion-resistant housing appropriate for freshwater environments
How to use
Install the heater fully submerged in the aquarium, placing it where water circulation is steady but not directly in front of high-flow outlets. Position the heater vertically or horizontally according to available space and secure it with the included suction mounts if provided. Allow the heater to acclimate and run continuously; verify water temperature with an external thermometer placed away from the heater to ensure accurate readings. When adjusting temperature, change settings gradually and monitor fish behaviour and water parameters during the first 24–48 hours.
Usage recommendations
Use the Diversa Thermoplus 25W in aquaria with appropriate volume for a 25 W heater. Combine with an accurate external thermometer and, where required, a thermostat controller for precise temperature regulation. Regularly inspect the heater and its seals for wear, and follow standard aquarium maintenance practices such as partial water changes and stable lighting cycles to support a healthy aquatic environment.

## FAQ

### How much does the Aquarium Heater Diversa Thermoplus 25W cost, and is it available for purchase?

The price is 19.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 09.07.2026 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 Diversa 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 Diversa 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/12026500/67514564_large.webp