--- product_id: 57841881 title: "Tetra FilterActive filter starter with highly active Live Bacteria, supports biological activity in the aquarium, accelerates removal of harmful substances, optimises cleaning performance of the filter, various sizes" brand: "tetra" price: "C$2341" currency: NIO in_stock: true reviews_count: 13 category: "Tetra" url: https://www.desertcart.ni/products/57841881-tetra-filteractive-filter-starter-with-highly-active-live-bacteria-supports store_origin: NI region: Nicaragua --- # Accelerates toxin breakdown Live active bacteria boost Extends filter cleaning intervals Tetra FilterActive filter starter with highly active Live Bacteria, supports biological activity in the aquarium, accelerates removal of harmful substances, optimises cleaning performance of the filter, various sizes **Brand:** tetra **Price:** C$2341 **Availability:** ✅ In Stock ## Summary > 🦠 Power up your aquarium’s health with every drop! ## Quick Answers - **What is this?** Tetra FilterActive filter starter with highly active Live Bacteria, supports biological activity in the aquarium, accelerates removal of harmful substances, optimises cleaning performance of the filter, various sizes by tetra - **How much does it cost?** C$2341 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/57841881-tetra-filteractive-filter-starter-with-highly-active-live-bacteria-supports) ## 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 - • **Rapid Detox Action:** Speeds up removal of harmful ammonia and nitrite, safeguarding your aquatic friends instantly. - • **Biological Balance Booster:** Replenishes essential nitrifying bacteria lost during cleaning for a thriving aquarium ecosystem. - • **Filter Performance Optimizer:** Enhances filter efficiency by breaking down organic waste, reducing maintenance frequency. - • **Easy Application, Crystal Clear:** Liquid formula applies effortlessly without clouding water—perfect for busy pros. - • **Supports High-Density Aquariums:** Ideal for tanks with heavy fish loads, maintaining water quality under pressure. ## Overview Tetra FilterActive is a premium liquid bacterial starter from Germany that revitalizes your aquarium’s biological filter by introducing live nitrifying and cleaning bacteria. It accelerates the breakdown of harmful substances like ammonia and nitrite, extends filter cleaning intervals, and supports soil bioactivity, ensuring a healthier, low-maintenance aquatic environment. Perfect for maintaining optimal water quality in both routine and high-stress conditions. ## Description Product Description Tetra FilterActive contains a mixture of live starter bacteria and mud-reducing cleaning bacteria. With regularly necessary cleaning measures, some of the important bacteria in the aquarium disappear. Tetra FilterActive can compensate for bacterial losses that occur during water changes or filter cleaning. The live starter bacteria settle on the filter materials in the filter and thus ensure the biological balance in the aquarium. These so-called nitrifiers are important for breaking down substances nitrite and ammonia, which are harmful to fish. In this way, immediate support for biological activity in the aquarium is guaranteed. In addition, Tetra FilterActive Mulm contains cleaning bacteria that keep the filter clean for longer. They accelerate the biological breakdown of organic pollutants such as fish faeces, mullein accumulation, feed and plant residues. Thus, the performance of the filter increases and the cleaning interval is extended. It also promotes soil bioactivity and prevents rotting. This contributes to the health and well-being of the aquarium inhabitants and reduces the maintenance of the aquarium. Tetra FilterActive contains natural bacterial cultures and has a 100 percent biological effect. Thanks to the liquid formula, it is very easy to apply and works without the water becoming cloudy. It can also be used to support biological activity when fishing or when there is a high water load from a large number of fish in the aquarium. Dosage: Shake well before use. After filter change or cleaning, add 5 ml to 20 l of aquarium water. Half dosage after water change. . Directions Check the dosage based on the aquarium size. Add the recommended amount of the product to the aquarium water. Ensure the product is evenly distributed in the water. Wait for the live bacteria to establish and promote biological activity in the aquarium. Regularly check and maintain water parameters for optimal fish health. Review: Good product that works well - Great product, fast delivery VFM Review: A must have bit of kit for your tank - Helped eliminate an ammonia spike ## Features - Country of Origin: Germany - Model number: 247031 - The package dimension of the product is: 3"L x5.5"W x12"H - Color: 100 ml ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00MBEFGS4 | | Best Sellers Rank | 1,669 in Pet Supplies ( See Top 100 in Pet Supplies ) 13 in Aquarium Water Treatments | | Brand Name | Tetra | | Country Of Origin | Guernsey | | Customer Reviews | 4.7 4.7 out of 5 stars (11,411) | | Global Trade Identification Number | 04004218247031 | | Item Form | Liquid | | Item Weight | 0.12 Kilograms | | Liquid Volume | 100 Millilitres | | Manufacturer | Tetra | | Manufacturer Part Number | 247031 | | Model Number | 247031 | | Target Species | Fish | | Unit Count | 100.0 millilitre | ## Product Details - **Brand:** Tetra - **Item form:** Liquid - **Item weight:** 0.12 Kilograms - **Liquid volume:** 100 Millilitres - **Manufacturer:** Tetra ## Images ![Tetra FilterActive filter starter with highly active Live Bacteria, supports biological activity in the aquarium, accelerates removal of harmful substances, optimises cleaning performance of the filter, various sizes - Image 1](https://m.media-amazon.com/images/I/71VFzYhKisL.jpg) ## Questions & Answers **Q: I don't appear to have any instructions in English on my bottle telling me how much to use.. Anyone help? 15l tank** A: 10 ml for 40 litre tank so just under 5ml **Q: How much do you use there are no English instructions, there is mention of 10ml but also I see 5ml per 20l** A: It depends a little on if you are using it to prepare a tank for fish changing filters or you are maintaining after a water cange. I believe it's 5ml per 20l as you have mentioned so for a 60l tank 15ml after changing or cleaning the filter and half that for water change maintenance. A full cap on the 250ml bottle is 10ml. Dose info should be on the inside of the back label as it peels back. I do not believe you can overdose as it's friendly fish bacteria. Hope that helps. **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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product that works well *by A***R on 8 January 2026* Great product, fast delivery VFM ### ⭐⭐⭐⭐⭐ A must have bit of kit for your tank *by K***E on 13 February 2026* Helped eliminate an ammonia spike ### ⭐⭐⭐⭐ 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 filter starter with highly active Live Bacteria, supports biological activity in the aquarium, accelerates removal of harmful substances, optimises cleaning performance of the filter, various sizes - Tetra AquaSafe to Turn Tap Water into Safe and Healthy Water for Fish and Plants, 250 ml - Tetra Nitrateminus Liquid, 250 ml --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ni/products/57841881-tetra-filteractive-filter-starter-with-highly-active-live-bacteria-supports](https://www.desertcart.ni/products/57841881-tetra-filteractive-filter-starter-with-highly-active-live-bacteria-supports) --- *Product available on Desertcart Nicaragua* *Store origin: NI* *Last updated: 2026-04-23*