# Water Treatment Product sera 31157 by sera — model SE-31157

**URL:** https://aio.lv/en/product--sera-se-31157--12054852
**Data updated:** 2026-03-12 19:38 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** sera
**Manufacturer code:** SE-31157
**EAN:** 4001942311571
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 36.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 30.57 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-se-31157--12054852

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

sera 31157 (model SE-31157) is a water treatment product from sera. The item is intended for aquarium and pond water maintenance, addressing water quality through a specialized formulation. Use cases include conditioning new aquarium water, supporting biological balance, and reducing harmful substances. Check manufacturer instructions for dosage and compatibility.

## Long description

sera 31157 (model SE-31157) is a water treatment product designed by sera for aquarium and pond water maintenance. The formulation helps condition new water, support biological balance and reduce harmful substances that can stress fish and aquatic plants. It is intended to be used as part of routine water care and in response to water quality changes; always consult the manufacturer instructions for precise dosage and compatibility with other treatments.
Advantages
The product provides targeted conditioning that prepares water for inhabitants, promotes a stable biological environment and helps neutralize problematic compounds. Its formulation is created to integrate with regular aquarium and pond maintenance, offering straightforward application and compatibility with standard filtration and biological treatments when used according to instructions.
Suitable for
 Conditioning newly filled aquarium or pond water
 Supporting the biological balance in freshwater systems
 Reducing chlorine, chloramine or other harmful substances
 Use during routine water changes and after equipment maintenance
Key specifications
 Intended use: aquarium and pond water treatment and conditioning
 Function: supports biological balance and reduces harmful substances
 Formulation: liquid water conditioner (follow label for concentration)
 Compatibility: formulated for freshwater environments; follow manufacturer guidance for use with plants and invertebrates
 Application: dosing into aquarium or pond water according to instructions
How to use
Shake the bottle gently before use and apply the product to water following the dosage instructions provided by the manufacturer. Add it to the aquarium or pond in small amounts distributed around the tank or near circulation to ensure even dispersion. Use during initial water setup, after partial water changes, and when addressing sudden changes in water quality. Do not exceed the recommended dosage and verify compatibility with any simultaneous treatments or medications.
Usage recommendations
Refer to the included manufacturer instructions for exact dosing rates and safety information. Monitor water parameters after application and adjust treatment frequency based on observed conditions. Store the product in a cool, dry place away from direct sunlight and out of reach of children and pets.

## FAQ

### How much does the sera 31157 water treatment SE-31157 cost, and is it available for purchase?

The price is 36.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 06.07.2026 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 sera 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 sera 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/12054852/67594013_large.webp