Description
The Aqua Ultraviolet Ultima II is a self-cleaning, multi-port-valve pond filter that has set the performance standard for pressurized pond filtration since 1999. The patented multi-port valve handles Filter / Backwash / Rinse / Recirculate / Closed positions with a single key-handle turn — making routine media cleaning as easy as cycling the valve and letting the dirty water exit through the waste line. Available in 1,000 / 2,000 / 4,000 / 6,000 / 10,000 / 20,000 / 30,000 / 60,000 gallon-class sizes with 1-1/2", 2", or 3" Side Mount Port options. Built in Temecula, California with a 5-year warranty on the filter body.
Key Features
- Patented multi-port valve — Filter / Backwash / Rinse / Recirculate / Closed in a single handle turn
- Self-cleaning operation — cycle the valve, dirty water exits through waste line, no media removal required
- Sized 1,000 → 60,000 gallons in 8 model classes
- Available with 1-1/2", 2", or 3" Side Mount Port plumbing
- Bio-mechanical filtration — particulate trap + biological surface area for nitrifying bacteria
- Pairs naturally with any Aqua UV sterilizer for combined particulate + UV-C clarification
- 5-year filter body warranty (per Aqua UV manufacturer terms)
- Made in the USA — Aqua Ultraviolet has manufactured UV sterilizers in Temecula, California since 1992
Specifications
| Series | Ultima II |
|---|---|
| Available Sizes | 1,000 / 2,000 / 4,000 / 6,000 / 10,000 / 20,000 / 30,000 / 60,000 gallon-class |
| Valve Options | 1-1/2" Top Mount · 2" Top Mount · 3" Side Mount |
| Operation Modes | Filter · Backwash · Rinse · Recirculate · Closed (multi-port valve) |
| Filter Type | Pressurized bio-mechanical bead filter |
| Service | Self-cleaning multi-port valve — no media removal required |
| Warranty | 5-year filter body (manufacturer) |
| Country of Origin | USA |
Frequently Asked Questions
How do I size an Ultima II for my pond?
The model number = approximate gallons. An Ultima II 6,000 handles a 6,000 gallon pond at typical koi load. Heavily-stocked koi or commercial systems should size up by one model.
What's the difference between 2" Top Mount and 3" Side Mount?
Side Mount uses a side-port valve geometry that lowers head loss on larger systems. Side Mount is standard from the 30,000 size up; Top Mount is available on 1,000 → 30,000 sizes.
Does the Ultima II replace my pond's biological filter?
It can. The bead media provides both mechanical particulate filtration AND biological surface area for nitrifying bacteria. Many installations use the Ultima II as the primary biofilter.
How often do I backwash?
Watch the pressure gauge — backwash when pressure rises 3-5 PSI above the clean operating baseline. Typical interval: weekly during heavy summer feeding, monthly in cooler seasons.
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