NT Labs Pond Mature Live Filter Bacteria 250/500/1000ml
When establishing a new filter, adding new fish to a pond or at the beginning of the season to help kick start the filter after winter dormancy or medicinal treatment. Use Mature if ammonia or nitrite are above zero or after cleaning the filter. Can be used weekly to maintain a natural unfiltered pond.
- Available in 250ml, 500ml, and 1000ml sizes
| Size | Treats (litres) |
|---|---|
| 250ml | 4550 |
| 500ml | 9100 |
| 1000ml | 18200 |
Directions
Always shake bottle well before use
Use double dose at start of season or when establishing a new pond/filter.
Add the required dose directly into the filter, if present.
Can be used weekly to control spikes in ammonia and nitrite.
FAQ
How often should I use the NT Labs Pond Mature Live Filter Bacteria?
It can be used weekly to control spikes in ammonia and nitrite. A double dose is recommended when establishing a new pond or filter or at the start of the season.
What is the coverage area for each size of the bacteria solution?
250ml treats 4550 litres, 500ml treats 9100 litres, and 1000ml treats 18200 litres.
Can I use this product after cleaning my filter?
Yes, it can be used after cleaning the filter to help re-establish the beneficial bacteria.

Jennifer Scott –
I used this after cleaning my pond filter and noticed a significant drop in ammonia levels within a week. The instructions were clear and the product worked well in a 10,000-litre pond. I’ve been using it weekly since spring and the water quality has remained stable.
Alexandra Gibson –
Great product for new pond setups. I added a double dose when introducing fish and the filter stabilized quickly. The 500ml size was just right for my pond size. Easy to use and effective.
Anthony MacLeod –
After winter, my pond had high nitrite levels. I used the 1000ml bottle and saw improvement within days. The bacteria helped maintain balance even during heavy fish activity. Highly recommended for pond maintenance.