FiltoClear 23500

FiltoClear 23500

The Oase FiltoClear 23500 Pressure Filter provides high-performance mechanical and biological filtration combined with integrated ultraviolet clarification (UVC) in a compact, high-capacity unit. Designed for fountains, formal spillways, pond-free features, water gardens, and large ponds up to 23,500 gallons, it delivers reliable water clarity in demanding environments. Its durable, impact-resistant housing can be buried up to the clamping ring for a clean, discreet installation that blends seamlessly into surrounding landscapes.

Inside, the system uses four densities of replaceable filter foam (10, 20, 30, and 45 ppi) supported by reinforced plates to maximize debris removal and extend the filter’s lifespan. A patented UVC cleaning rotor continuously clears the quartz sleeve, ensuring consistent UV performance. Maintenance is simplified with Easy-Clean Technology and a two-way valve that allows for backflushing and waste discharge without opening the unit. External monitoring features let users check UVC operation, filtration performance, and pollutant levels, while UV lamps can be replaced without opening the filter. Built-in bypass technology helps maintain steady water flow and reduces the risk of clogging.

The FiltoClear 23500 is equipped with 2″ inlet and outlet connections for versatile plumbing options, along with a switchable cleaning handle linked to internal rods for efficient foam flushing. It also includes an optional winter drain feature for seasonal maintenance. The system comes complete with four filter foams, two 120W UVC bulbs, metric 2″ fittings, and five 2″ Schedule 40 adapters. It supports flow rates up to 6,000 gallons per hour and is backed by a 2-year warranty with an additional 1-year extension.

In real-world applications, this filter excels in maintaining clear, healthy water in large and heavily stocked ponds where consistent filtration is essential. Its pressurized design allows water to be pumped uphill to waterfalls or elevated spillways without losing efficiency, giving pond owners greater flexibility in design. By combining powerful UV clarification with robust mechanical and biological filtration, it reduces algae, improves water quality, and supports beneficial bacteria. The result is a balanced aquatic ecosystem that requires less manual intervention while keeping water features visually clean and enjoyable throughout the year.