# Water treatment solution Tetra pH / KH Plus, 250 ml, adjusts pH and carbonate hardness

**URL:** https://aio.lv/en/product--tetra-62373--12055670
**Data updated:** 2026-04-03 16:32 (EEST)
**Category:** Aquarium Supplies
**Manufacturer:** Tetra
**Manufacturer code:** 62373
**EAN:** 4004218243545
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 9.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tetra-62373--12055670

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Tetra pH / KH Plus is a 250 ml aquarium water treatment solution designed to adjust pH and carbonate hardness (KH). Supplied as a single bottle, it stabilizes water parameters for freshwater tanks, helping maintain optimal conditions for sensitive fish and plants. Use to correct low KH or raise pH to recommended levels following dosing instructions.

## Long description

Tetra pH / KH Plus, 250 ml is a liquid water treatment solution designed to adjust carbonate hardness (KH) and pH in freshwater aquariums. The formula is intended to stabilize KH and pH after measurements and during routine maintenance, helping to create consistent water chemistry for sensitive fish and aquatic plants. The product is supplied as a single 250 ml bottle for measured, test-based dosing.
Advantages
Tetra pH / KH Plus allows controlled modification of carbonate hardness and pH without adding cloudiness or solid residues to the aquarium. The liquid form enables precise dosing to avoid sudden parameter shifts, and gradual corrections reduce stress for fish and plants. Using the product after testing helps maintain steady water conditions and supports overall aquarium stability.
Suitable for
 Adjusting low carbonate hardness (KH) in freshwater aquariums
 Raising and stabilizing pH when test results indicate a need
 Supporting water chemistry stability after partial water changes
 Maintaining conditions for freshwater fish and live plants that require stable KH and pH
Key specifications
 Form: liquid conditioner
 Volume: 250 ml
 Function: adjusts carbonate hardness (KH) and pH
 Intended water type: freshwater aquariums
 Dosage compatibility: suitable for precise, test-based dosing
How to use
Test aquarium water for pH and carbonate hardness before adding the product. Apply Tetra pH / KH Plus in small measured doses based on aquarium volume and the degree of adjustment required, then allow time for parameters to stabilize. Re-test water after each dosing step and wait between adjustments to avoid rapid changes. Follow the exact dosing instructions on the product label for measurements per litre or gallon.
Usage recommendations
Use Tetra pH / KH Plus only after confirming current pH and KH with reliable test kits. Make incremental adjustments and re-test between applications to ensure gradual stabilization. Avoid overdosing, since sudden large changes in pH or KH can stress fish and plants. Combine corrective dosing with regular maintenance and monitoring for long-term water stability.

## Specifications

| Feature | Value |
|---|---|
| Neutral pH | Yes |
| Quantity per pack | 1 pc(s) |
| Suitable for freshwater aquarium | Yes |
| Suitable for marine aquarium | Yes |

## FAQ

### How much does the Tetra pH / KH Plus 250 ml water treatment cost, and is it available for purchase?

The price is 11.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 70 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 13.07.2026 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 Tetra 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 Tetra 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/12055670/68155473_large.webp