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The JBL PhosEx Pond Filter is the ultimate solution to obtain crystal-clear basin water. Directly targeting phosphates, these high-performance granules starve algae and restore the biological balance of your aquatic ecosystem.
The massive appearance of algae in a pond is often a sign of excess nutrients, especially phosphates. The JBL PhosEx Pond Filter (2.5kg / 5l) acts as a real nutrient magnet. By capturing phosphates in water, it deprives algae of their main energy source, stopping their proliferation in a natural and sustainable way.
Unlike some aggressive chemical treatments, granules JBL function by physical adsorption. This method has major advantages:
The PhosEx Pond Filter was designed for a simplified installation to the maximum, allowing any basin owner to regain control of its water in a few minutes:
| Characteristics | Detail |
|---|---|
| Make | JBL |
| Product name | PhosEx Pond Filter |
| Reference | 2737500 |
| Capacity / Weight | 5 Liters / 2.5 kg |
| Media type | Filter granules |
| Duration of action | About 3 months (depending on load) |
| Included in the kit | Media PhosEx + Mesh Bag |
The advice of the expert RecifArt: For optimal results, test your water with a PO4 test before and after use. Once the rate starts rising again, it's time to replace the granules. We recommend that the filter mass be renewed every 3 months, especially in spring and summer when the pool is most exposed to the sun.
The JBL PhosEx Pond Filter is a filter media in the form of granules specifically designed to remove phosphates (PO4) from water from the basin. Phosphate is the basic nutrient that algae need to proliferate, so its removal helps to prevent algae from developing in a sustainable manner and to maintain clear, healthy water for fish and beneficial for the growth of aquatic plants.
The use is simple and quick: just fill the mesh bag supplied with the granules, rinse it thoroughly with running water to remove the transport dust, then insert it into your basin filter. Ideally place it between two layers of existing filter masses or in the special filter media compartment.
The JBL PhosEx Pond Filter works very quickly. A significant and measurable decrease in high phosphate levels is generally observed within 24 hours of installation in the filter. Its action then continues to stabilize water parameters.
Treatment effectiveness lasts about 3 months. This may vary depending on the initial organic load of your basin and the phosphate concentration at the beginning. Once the media is saturated, simply replace the granules to continue protecting your pond against algae.
No, this treatment is totally harmless to fish and living organisms in the basin. Unlike some low-end products, the JBL PhosEx Pond Filter does not release any trace of aluminum into water and does not cause any adverse side effects on the aquatic ecosystem.
It is compatible with all current basin filters on the market, whether they are gravity filters or pressure filters, provided they have a container or compartment to accommodate filter weights.
The pack includes 2.5 kg (a volume of 5 litres) of PhosEx Pond Filter granules as well as the mesh bag needed for clean and easy installation in your filter.
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The JBL PhosEx Pond Filter is the ultimate solution to obtain crystal-clear basin water. Directly targeting phosphates, these high-performance granules starve algae and restore the biological balance of your aquatic ecosystem.

