Available to ship on July 27, 2026
Oase 3rd Gen High-Volume FiltoClear 15500 & 23500 Pressure Filters deliver powerful mechanical and biological filtration with integrated ultraviolet clarification (UVC) in a compact, high-capacity design ideal for fountains, formal spillways, pond-free features, water gardens, and ponds up to 15,500 & 23,500 gallons.
Built with a durable, impact-resistant housing that can be buried up to the clamping ring for discreet installation, the FiltoClear uses four densities of replaceable filter foams (10, 20, 30, and 45 ppi) with reinforced support plates to maximize filtration efficiency and extend service life. A patented UVC Cleaning Rotor keeps the quartz sleeve clear for optimal UV light transmission, while Easy-Clean Technology with a two-way valve allows convenient backflushing and waste discharge without opening the filter or removing the cover. Integrated monitoring lets users check UVC operation, filter performance, and pollutant levels while replacing both UV lamps externally, and bypass technology ensures consistent water flow to prevent clogging. With 2" inlets and outlets for flexible plumbing, a switchable cleaning handle connected to internal rods for simple foam flushing, and optional winter drain capability.
Available Sizes
FiltoClear 15500 system includes four filter foams, two 84W UVC bulbs, metric 2" fittings, and five 2" Sch40 adapters, supports flows up to 5,200 gph, and is backed by a 2-year warranty plus 1-year extension.
FiltoClear 23500 system includes four filter foams, two 120W UVC bulbs, metric 2" fittings, and five 2" Sch40 adapters, supports flows up to 6,000 gph, and is backed by a 2-year warranty plus 1-year extension.
Key Features
- In-line pressure filters offer biological and mechanical filtration that can be located remotely
- Oase 3rd generation FiltoClear provides mechanical and biological filtration with ultraviolet clarification (UVC)
- Compact, high-capacity filter is perfect for Fountain, Formal Spillway, Pond-free and Water Garden applications
- The high quality, impact resistant body can be buried to the clamping ring
- 4 densities of replaceable filter foams (10, 20, 30 & 45 pores per inch), new plates and extra supports improve cleaning function and ensure long service life
- Patented UVC Cleaning Rotor keeps quartz glass clean for better transmission of UV light (FiltoClear 5200 & 8200 only)
- 2-way valve backflushes filter and directs waste with Easy-Clean Technology, no need to open filter or remove the cover
- Monitor UVC, filter performance and pollutant level and change UV lamp all without opening filter
- Bypass technology ensures constant water flow and prevents the filter from becoming clogged
- 2" inlets and outlets allow for multiple draw and return points for water throughout any water feature
- Switchable cleaning handle connects to four cleaning rods to easily flush foams during cleaning
- Easily drain FiltoClears for winterization without ever opening the filter (optional, sold separately)
Built in UV Clarifier: UV-Clarifier makes the FiltoClear Pressure Filter your all in one filtration solution. From the moment you add the filter to your pond the UV-Clarifier starts eliminating microscopic green algae (pea soup)
Pressurized Filtration: Pressurized filters allow for the use of waterfalls or watercourses in your backyard pond. This feature allows you to have all the necessary components for sustaining life in your pond while allowing you to use only one pond pump and filter to reach your waterfall.
Easy Cleaning: With a simple rotation of the cleaning switch and a few pulls on the cleaning handle will easily and effectively remove trapped debris inside the filter, without ever getting your hands dirty.
Oase FiltoClear 15500 & 23500 Instructions Manual
Oase FiltoClear 15500 & 2300 Data Sheet
