# Liquid pH-minus for aquariums sera PH-MINUS 100 ml, pH reducer solution

**URL:** https://aio.lv/en/product--sera-04340--12268137
**Data updated:** 2026-04-16 14:14 (EEST)
**Category:** Aquarium Supplies
**Manufacturer:** sera
**Manufacturer code:** 04340
**EAN:** 4001942035408
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 10.49 €
**Prices and availability valid until:** 2026-07-10 23:59
**Price without VAT (21%):** 8.67 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-04340--12268137

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

sera PH-MINUS is a liquid pH reducer in a 100 ml bottle designed for aquariums. It safely lowers and stabilizes pH levels to correct alkaline water, helping maintain optimal conditions for freshwater and some planted tanks. Use in measured doses according to instructions to avoid rapid pH shifts; suitable for regular pH adjustments and emergency corrections.

## Long description

sera PH-MINUS 100 ml is a liquid pH reducer formulated for aquarium use. The product comes in a convenient 100 ml bottle and is intended to lower and stabilize pH levels in freshwater aquariums and some planted tanks. It is a measured chemical solution designed for routine pH adjustments and for correcting unexpectedly alkaline water to maintain suitable conditions for fish and plants.
Advantages
sera PH-MINUS offers a ready-to-use, liquid formulation that allows for controlled pH reduction without the need for complex preparation. The small bottle size is practical for hobbyists and smaller tanks, and the solution is designed to act predictably when used according to dosing instructions, helping to avoid large and sudden pH swings when applied correctly.
Suitable for
Freshwater aquariums that require pH reduction.
Planted tanks where moderate lowering of pH is needed.
Routine maintenance to correct mildly alkaline water.
Emergency corrections when pH rises above target levels.
When it may not be suitable
This liquid pH reducer is not intended for use in marine or reef aquariums where stable alkaline conditions are required. It may also be unsuitable for very large tanks if the 100 ml volume does not provide sufficient dosing capacity; in such cases a product designed for larger systems or multiple applications may be preferable. Avoid excessive or repeated dosing that can cause rapid pH changes harmful to aquatic life.
Key specifications
Form: liquid solution
Volume: 100 ml
Intended use: reduction and stabilization of pH in freshwater and some planted aquariums
Packaging: bottle suitable for measured dosing
How to use
Measure current aquarium pH before application and compare with the desired pH for the specific fish and plants. Add sera PH-MINUS in small, measured doses according to the manufacturer’s instructions, allowing time between additions for the water to equilibrate and for pH to be rechecked. Perform adjustments gradually rather than large single-dose changes to minimize stress on aquatic organisms. After achieving the target pH, maintain regular monitoring and only repeat dosing as required by test results.
What to consider before purchase
Verify the desired pH range for your fish and plants to determine if a pH reducer is needed.
Check aquarium volume to estimate how many doses or bottles will be required.
Have a reliable pH test kit to monitor changes during and after application.
Consider whether your aquarium requires a product formulated specifically for planted tanks or sensitive species.
Usage recommendations
Use sera PH-MINUS only as directed: test pH before and after dosing, apply in small increments with time between doses, and avoid rapid large pH shifts. Store the bottle out of reach of children and follow safety instructions on the label.

## FAQ

### How much does the sera PH-MINUS 100 ml liquid pH reducer cost, and is it available for purchase?

The price is 10.49 € (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 01.07.2026 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/12268137/68186147_large.webp