OASE Phosless Cartridges for BioTec & BioTec ScreenMatic

These cartridges are designed to chemically bind and remove phosphates from your pond water. By reducing phosphate levels, they starve algae of the nutrients they need to grow, which helps prevent unsightly blooms and keeps your water clear.

These cartridges are specifically engineered for the BioTec 18, BioTec 36, BioTec ScreenMatic 18000, and BioTec ScreenMatic 32000 filtration systems. They are genuine OASE replacement parts, so you can be confident they will fit these specific models perfectly.

Replacement frequency depends on your pond's specific bioload, the number of fish, and the amount of sunlight your pond receives. Generally, you should monitor your water clarity and phosphate levels; when you notice algae growth increasing, it is time to swap them out for fresh cartridges.

Yes, for safety and to prevent water from flowing through the filter housing while you are working, you should disconnect the power to your filter system before opening the unit to replace the cartridges.

These cartridges are designed to target phosphates specifically. While they are safe for your aquatic ecosystem, it is always good practice to monitor your water chemistry regularly when adding any new filtration media to ensure your pond's balance remains stable.