# sera KH/pH-plus liquid KH stabilizer, bottle, 1 pc (aquarium water conditioner)

**URL:** https://aio.lv/en/product--sera-03490--12040985
**Data updated:** 2026-03-12 19:22 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** sera
**Manufacturer code:** 03490
**EAN:** 4001942038102
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.99 €
**Prices and availability valid until:** 2026-07-05 23:59
**Price without VAT (21%):** 7.43 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-03490--12040985

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

sera KH/pH-plus is a liquid KH stabilizer supplied in a bottle (1 pc) for aquarium water. It adjusts and stabilizes carbonate hardness (KH) and pH buffering capacity to support stable water chemistry. Packaged as a dispenser bottle, it is used to maintain consistent KH levels, reduce pH fluctuations, and support home aquaria and planted tanks.

## Long description

sera KH/pH-plus liquid KH stabilizer is a ready-to-use aquarium water conditioner supplied in a dispenser bottle designed to adjust and stabilise carbonate hardness (KH) and improve the buffering capacity of aquarium water. The formulation helps maintain consistent KH values and reduces rapid pH fluctuations, supporting a stable chemical environment for freshwater aquaria, including planted tanks and community setups. The product is supplied as a single bottle and is intended for routine water parameter management to promote long-term water stability.
Advantages
sera KH/pH-plus provides a controlled method to increase and stabilise carbonate hardness without adding excessive salts or clouding when used as directed. The liquid format allows precise dosing with the dispenser bottle, enabling gradual adjustments to KH and buffering capacity. Regular use supports more predictable pH behaviour, which benefits biological filtration and the health of fish, invertebrates, and aquatic plants by reducing stress caused by sudden changes in water chemistry.
Suitable for
 Freshwater community aquaria where KH needs to be increased or stabilised
 Planted tanks requiring stable carbonate hardness and pH buffering
 Aquaria with sensitive species that react to rapid pH swings
 Situations after water changes where KH has dropped and buffering is needed
Key specifications
 Form: liquid conditioner in a dispenser bottle
 Function: adjusts and stabilises carbonate hardness and pH buffering capacity
 Application: freshwater aquaria, including planted and community tanks
 Package: single bottle suitable for routine dosing
How to use
Measure aquarium KH and pH before application to determine the required adjustment. Add sera KH/pH-plus gradually to the aquarium water according to the manufacturer dosing instructions printed on the bottle, allowing time between doses to observe changes. Avoid large single-dose additions; introduce the product slowly to achieve the desired KH level and buffering effect while monitoring pH and overall water parameters. When performing water changes, retest KH and top up with the stabiliser as necessary to restore stable conditions.
Usage recommendations
For predictable results, test carbonate hardness and pH regularly and adjust dosing incrementally. Use in combination with good maintenance practices—stable temperature, regular water changes, and proper filtration—to support a balanced aquarium environment. If uncertain about target KH levels for specific species, consult species care guidelines and adjust the product usage accordingly.

## Specifications

| Feature | Value |
|---|---|
| Volume | 100 ml |
| Product type | KH stabilizer |
| Dispenser type | Bottle |
| Quantity per pack | 1 pc(s) |
| Ready to use | Yes |
| Product form | Liquid |
| Suitable for pool/spa water | No |
| Suitable for pond water | No |
| Suitable for aquarium water | Yes |

## FAQ

### How much does the sera KH/pH-plus liquid KH stabilizer cost, and is it available for purchase?

The price is 8.99 € (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 29.06.2026 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

### Where can I download the instructions for sera KH/pH-plus liquid KH stabilizer?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/12040985/67602148_large.webp