---
product_id: 48317861
title: "Aqualibrium First Aid Salt Additive Tonic Treatment, Support Sick and Stressed Aquarium Fish, pH Buffer, 260 g"
brand: "interpet"
price: "€ 7.77"
currency: EUR
in_stock: true
reviews_count: 10
category: "Interpet"
url: https://www.desertcart.be/products/48317861-aqualibrium-first-aid-salt-additive-tonic-treatment-support-sick-stressed
store_origin: BE
region: Belgium
---

# Mild pH buffering action Maintains internal salt-fluid balance Supports stressed & sick fish recovery Aqualibrium First Aid Salt Additive Tonic Treatment, Support Sick and Stressed Aquarium Fish, pH Buffer, 260 g

**Brand:** interpet
**Price:** € 7.77
**Availability:** ✅ In Stock

## Summary

> 🐠 Keep your fish thriving with every drop — because your aquarium deserves the best!

## Quick Answers

- **What is this?** Aqualibrium First Aid Salt Additive Tonic Treatment, Support Sick and Stressed Aquarium Fish, pH Buffer, 260 g by interpet
- **How much does it cost?** € 7.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/48317861-aqualibrium-first-aid-salt-additive-tonic-treatment-support-sick-stressed)

## Best For

- interpet enthusiasts

## Why This Product

- Trusted interpet brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **pH Perfect:** Acts as a gentle pH buffer to maintain optimal water chemistry effortlessly.
- • **All-in-One Tonic:** Versatile additive that supports disease treatment and overall aquarium vitality.
- • **Balance Like a Pro:** Unique physiological salt formula stabilizes your fish’s internal environment for peak health.
- • **Long-Lasting Impact:** Once added, it stays active indefinitely until water changes, ensuring continuous care.
- • **Stress Less, Swim More:** Reduces physiological stress, helping your aquatic friends thrive even under pressure.

## Overview

Interpet Aqualibrium First Aid Salt Additive is a 260g powder designed to support freshwater aquarium fish by maintaining internal salt-fluid balance, buffering pH, and reducing stress. Suitable for cold-water and tropical tanks, it enhances fish health and water quality, working continuously until removed by water changes. Trusted by over 1,000 users with a 4.5-star rating, it’s a must-have tonic for any serious aquarist.

## Description

Free delivery and returns on eligible orders. Buy Interpet Aqualibrium First Aid Salt Additive Tonic Treatment, Support Sick and Stressed Aquarium Fish, pH Buffer, 260 g at desertcart UK.

Review: Recommend - My fish has fungi on her this does calm her
Review: FIN-tastic! - My fish had been poorly. At feeding time he normal comes up to me very alert clearly healthy. But when he didn't and started laying at the bottom of the tank and just looked miserable, I was worried. I did everything but he was the same. Then I looked at products and I seen this and the amazing feed back and thought give it a go. A few days later he's flying around his environment lookng healthy and wanting his food. I just followed the instructions and added small amounts for about 3 days and that was just what he needed. It looks like salt grains you put in the tank and they melt but it stays in the environment until the next water change. I would highly recommend. I will always keep a box of this to hand in future.

## Features

- Warning:Not suitable for children under 36 months
- Aqualibrium First Aid Salt is a unique physiological salt formula which helps freshwater fish maintain a constant internal salt-fluid balance
- A versatile water treatment which can be used as a general aquarium tonic, a mild pH buffer, and a supportive measure when treating fish diseases
- Reduces physiological stress for healthier fish, stablises water quality to support your aquarium's balance
- For use in cold-water or tropical freshwater aquariums. This product can be used with any other Interpet medication or water treatment
- Once Aqualibrium First Aid Salt Additive has been added it will remain indefinitely, only being removed by water changes and water outflow

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003M05BM2 |
| Allergen Information | Allergen-Free |
| Best Sellers Rank | 6,704 in Pet Supplies ( See Top 100 in Pet Supplies ) 77 in Aquarium Water Treatments |
| Brand | Interpet |
| Brand Name | Interpet |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.5 out of 5 stars 1,028 Reviews |
| Global Trade Identification Number | 00755349005215 |
| Included Components | See Description |
| Item Form | Powder |
| Item Type Name | Interpet Aqualibrium First Aid Salt Additive Tonic Treatment, Support Sick and Stressed Aquarium Fish, pH Buffer, 260 g |
| Item Weight | 260 Grams |
| Item form | Powder |
| Item weight | 260 Grams |
| Manufacturer | Interpet |
| Manufacturer Part Number | 521 |
| Model Number | 521 |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Warranty | Manufacturer Fault |
| Target Species | Fish |
| UPC | 501292005211 798256219375 755349005215 |
| Unit Count | 1 count |
| Unit count | 1 count |

## Product Details

- **Brand:** Interpet
- **Item weight:** 260 Grams
- **Item form:** Powder
- **Manufacturer:** Interpet
- **UPC:** 501292005211 798256219375 755349005215

## Images

![Aqualibrium First Aid Salt Additive Tonic Treatment, Support Sick and Stressed Aquarium Fish, pH Buffer, 260 g - Image 1](https://m.media-amazon.com/images/I/71SBPvlVGYL.jpg)

## Questions & Answers

**Q: 1 of my fish has columnaris & all of the others arent as active as they normally are. Will this cure them? I have some platies, neon tetras & shrimps.**
A: I’d recommend this along with a big water change - start with 1g/L then build up to higher level as on pack - should help as a tonic

**Q: Hi i have 300 lt aquarium how many tea spoons do i have use ??  thanks**
A: Hello the dosage is mentioned on the packaging for general use - 1% solution is 1g/L. Higher for medicinal uses. You should have enough for 780L general use :)

**Q: This has made my water go slightly yellow. Is this normal ?**
A: Hello Andrew- I experienced yellowing when preparing the solution and in the tank. This dispersed and cleared after two days- hope this helps- kind regards, Ruth

**Q: Cold water fish**
A: My wife uses this in her aquarium & she only has cold water tanks so yes.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Recommend
*by L***Y on 21 July 2026*

My fish has fungi on her this does calm her

### ⭐⭐⭐⭐⭐ FIN-tastic!
*by M***. on 25 June 2025*

My fish had been poorly. At feeding time he normal comes up to me very alert clearly healthy. But when he didn't and started laying at the bottom of the tank and just looked miserable, I was worried. I did everything but he was the same. Then I looked at products and I seen this and the amazing feed back and thought give it a go. A few days later he's flying around his environment lookng healthy and wanting his food. I just followed the instructions and added small amounts for about 3 days and that was just what he needed. It looks like salt grains you put in the tank and they melt but it stays in the environment until the next water change. I would highly recommend. I will always keep a box of this to hand in future.

### ⭐⭐⭐⭐ fish
*by I***. on 22 February 2026*

used on my fish seems ok

## Frequently Bought Together

- Interpet Aqualibrium First Aid Salt Additive Tonic Treatment, Support Sick and Stressed Aquarium Fish, pH Buffer, 260 g
- Interpet Anti Internal Bacteria Treatment for Aquarium Fish, Halts Progress of Bacterial Problems, 100 ml, Treats 500 litres
- Interpet Anti Fungus and Finrot Aquarium Fish Treatment, Treats Affected Fish, Prevents Disease Spreading, 100 ml, Treats 500 litres

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-09-30*