Tetra FilterActive
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Live bacteria for a healthy biological filter environment — fast-acting
Ideal for aquarium start-up, after filter cleaning, or after water changes
✅ Level: Easy — Dose into the filter or aquarium. Immediately effective.
Tetra FilterActive contains a powerful blend of live bacteria that immediately build a healthy biological filter environment. Ideal for starting up a new aquarium, after cleaning the filter, or after a water change where beneficial bacteria have been lost. Responsibly lowers ammonia and nitrite for all freshwater aquariums.
🔧 Product Specifications
| Type | Live nitrifying bacteria |
| Function | Build a biological filter environment |
| Lowers | Ammonia and nitrite |
| Ideal for | Aquarium start-up, filter cleaning, or water changes |
| Suitable for | All freshwater aquariums |
| Brand | Tetra |
🚚 Delivery & Warranty
- Delivered quickly from our store — ready to use immediately
- Shipping Tuesday or Friday → Read more about shipping
- Delivery with track & trace, usually within 1–2 working days
- Problem with your order? We'll solve it together. Contact us via our customer service.
- Free shipping from €59,-
✂️ Usage Tips
Add FilterActive directly to the filter or aquarium water. Use after each filter cleaning to quickly restore the bacterial population. Combine with Tetra SafeStart when starting a new aquarium for maximum biological activity.
💡 Tip
Use FilterActive after every filter cleaning — rinsing filter media always removes some of the beneficial filter bacteria. FilterActive quickly restores the population.
❓ Frequently Asked Questions
What is the difference with Tetra SafeStart?
FilterActive is specifically for activating the filter media. SafeStart activates the biological environment in the aquarium water. Both products complement each other.
How fast does FilterActive work?
The live bacteria are active immediately after addition and begin building the biological filter environment without delay.
Do you have another question? Feel free to contact us — we are happy to help you make the right choice for your aquarium.
