---
product_id: 48451818
title: "Tetra FilterActive Bacteria- mix of live starter bacteria & sludge-reducing cleaning bacteria, to support biological activity in aquarium, extend cleaning intervals & improve filter performance, 250ml"
brand: "tetra"
price: "13063 Ft"
currency: HUF
in_stock: true
reviews_count: 13
category: "Tetra"
url: https://www.desertcart.hu/products/48451818-tetra-filteractive-bacteria-mix-of-live-starter-bacteria-and-sludge
store_origin: HU
region: Hungary
---

# Extends filter cleaning intervals Accelerates pollutant breakdown Live starter & cleaning bacteria Tetra FilterActive Bacteria- mix of live starter bacteria & sludge-reducing cleaning bacteria, to support biological activity in aquarium, extend cleaning intervals & improve filter performance, 250ml

**Brand:** tetra
**Price:** 13063 Ft
**Availability:** ✅ In Stock

## Summary

> 🐠 Keep your aquarium thriving with nature’s own filter booster!

## Quick Answers

- **What is this?** Tetra FilterActive Bacteria- mix of live starter bacteria & sludge-reducing cleaning bacteria, to support biological activity in aquarium, extend cleaning intervals & improve filter performance, 250ml by tetra
- **How much does it cost?** 13063 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/48451818-tetra-filteractive-bacteria-mix-of-live-starter-bacteria-and-sludge)

## Best For

- tetra enthusiasts

## Why This Product

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

## Key Features

- • **Stress-Free Fish Care:** Supports biological balance after water changes or adding new fish, keeping your aquatic friends happy and healthy.
- • **Cleaner Filter, Less Hassle:** Sludge-reducing bacteria keep your filter performing at peak longer, cutting down maintenance time.
- • **Crystal Clear Water, Always:** Liquid formula that won’t cloud your tank, ensuring pristine visibility for your aquatic ecosystem.
- • **Eco-Friendly & 100% Biological:** Natural bacterial cultures that promote sustainable aquarium health without chemicals.
- • **Turbocharge Your Aquarium's Bio-Filter:** Instantly boosts beneficial bacteria to neutralize harmful ammonia and nitrite.

## Overview

Tetra FilterActive is a 250ml liquid bacterial supplement designed to replenish essential nitrifying and sludge-reducing bacteria in aquariums. It accelerates the breakdown of harmful ammonia and nitrite, extends filter cleaning intervals, and supports a balanced, healthy aquatic environment. Easy to use and 100% biological, it ensures cleaner water and less maintenance for aquarium enthusiasts.

## Description

Product Description Tetra FilterActive contains a mix of living starter and sludge-reducing cleaning bacteria. Some important bacteria are lost through the regular cleaning an aquarium requires. Tetra FilterActive rebalances bacteria lost when the water is changed or the filter is cleaned. Tetra FilterActive contains living starter bacteria that settle in the filter on the filter material and maintain the biological balance in the aquarium. These nitrifiers are important for breaking down nitrite and ammonia, which are harmful to fish. This product provides immediate support for the biological activity in the aquarium. Tetra FilterActive also contains sludge-reducing cleaning bacteria that keep the filter cleaner for longer with their natural action. They accelerate the biological decomposition of organic pollutants such as fish waste, built-up sludge, food remains and dead plant materials. This improves the filter’s performance and extends the intervals between cleaning. It also promotes bioactivity in the substrate and prevents decay. This helps to keep the aquarium inhabitants happy and healthy and reduces the maintenance the aquarium needs. Tetra FilterActive contains natural bacterial cultures and is 100% biological. Its liquid formula is very easy to use and does not cloud the water. It can also be used to support the biological activity in the aquarium when new fish are added or the water is heavily contaminated due to a large number of fish. Directions Shake well before use, then add 5 ml of product to 20 litres of water after replacing or cleaning the filter. Reduce the dosage by half after a water change.

Review: Good product that works well - Great product, fast delivery VFM
Review: Good - Works well

## Features

- Accelerates degradation of pollutants like ammonia and nitrite
- Value for money
- Good product with good quality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00MBEFGUM |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 1,281 in Pet Supplies ( See Top 100 in Pet Supplies ) 7 in Aquarium Water Treatments |
| Colour | 250 ml |
| Customer Reviews | 4.6 4.6 out of 5 stars (11,170) |
| Date First Available | 26 Sept. 2014 |
| External Testing Certification | Grüner Punkt - ARA (Verpackungskennzeichen) |
| Item Form | Liquid |
| Item Weight | 283 g |
| Item model number | 247079 |
| Number of Items | 1 |
| Product Dimensions | 18 x 11 x 15 cm; 283 g |
| Quantity | 1 |
| Size | 250 ml (Pack of 1) |
| Specific Uses | Indoor |

## Product Details

- **Brand:** Tetra
- **Item form:** Liquid
- **Item weight:** 0.28 Kilograms
- **Liquid volume:** 250 Millilitres
- **Manufacturer:** Spectrum Brands

## Images

![Tetra FilterActive Bacteria- mix of live starter bacteria & sludge-reducing cleaning bacteria, to support biological activity in aquarium, extend cleaning intervals & improve filter performance, 250ml - Image 1](https://m.media-amazon.com/images/I/71foNwDsJ8L.jpg)

## Questions & Answers

**Q: Can This Be used for marine aquariums?**
A: States suitable for all Freshwater Aquariums so I don't believe it is suitable for marine

**Q: Does this help stop brown algae?**
A: No. It aids your filtration system after clean ups and water changes.

**Q: I added it to the water but realise now should add to filter, can i do a second dose the day after?**
A: It shouldn’t really matter as it would soon be pumped around the tank best put all in anyway if your starting a new tank once cycled start of very slowly as it 6 to 12 months to fully cycle an aquarium add clean up crew first

**Q: Do I need to add a couple of fish as well to  help maintain the bacteria I'm putting in please?**
A: There are 2 or 3 options when using this you need ammonia in the water for the good bacteria to feed on. So you could put some very hardy fish in there to produce waste as in there poo and pee which would create Ammonia for your bacteria to feed on or you could put a few flakes of food in the water which would break down and create Ammonia or thirdly you could put pure Ammonia in the water which the good bacteria would feed on. I normally just put a bit of food in the water its the best way of starting the cycle without the risk of harming any of your fish. You could also look at Prime conditioner and Prime stability  make sure you test the water often it still takes time even when using this product be patient good luck.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product that works well
*by A***R on 8 January 2026*

Great product, fast delivery VFM

### ⭐⭐⭐⭐⭐ Good
*by V***H on 22 December 2025*

Works well

### ⭐⭐⭐⭐ Very effective
*by A***R on 2 September 2025*

This to appears to work better than other similar items on the market, that l have used previously.

## Frequently Bought Together

- Tetra FilterActive Bacteria- mix of live starter bacteria & sludge-reducing cleaning bacteria, to support biological activity in aquarium, extend cleaning intervals & improve filter performance, 250ml
- Tetra AquaSafe to Turn Tap Water into Safe and Healthy Water for Fish and Plants, 500 ml
- Tetra AlguMin - Quickly Combats All Types Of Algae In The Aquarium, Prevents The Growth Of New Algae, 250 ml

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-01-27*