Bullfrog WellSpring Filter

The coreless design removes the rigid plastic center found in standard filters. This allows for better water flow through the entire media surface, which improves filtration efficiency and reduces the amount of plastic waste you generate over time.

These filters are specifically engineered for STIL spa models from 2018 to the present. If you have an older spa model, you can still use them, but you will need to purchase a separate filter cage assembly to make them fit correctly.

Each package contains two replacement filter units, providing you with a convenient supply for your maintenance routine.

Installation is straightforward and similar to standard filters, but because they lack a center core, ensure they are seated properly in your filter housing. If you are adapting them for an older model, ensure your filter cage assembly is securely in place first.

Yes, these utilize a premium filter media specifically designed to capture debris more effectively. This ensures consistent water clarity, even with the increased flow rate provided by the coreless design.