What size PondMAX pressure filter do I need for my pond?

Match your pond's gallon capacity to the table above, using the "with fish/full sun" column if you keep koi or goldfish or your pond gets a lot of direct sun, and the "no fish/shaded" column if it's a fish-free water feature in a shadier spot. When in between two sizes, sizing up gives you a margin of safety as fish grow and the pond ages.

What's the difference between the UV and non-UV models?

UVC models add a built-in ultraviolet clarifier that targets free-floating algae to help keep water clear, on top of the same mechanical and biological filtration in every model. The PF2400 and PF3600 are the two sizes offered without UV, for ponds that don't need extra algae control or already have a separate UV clarifier installed.

Can I bury the PondMAX pressure filter in the ground?

Yes. Because the housing is pressurized, it can be buried in the ground up to the rim, which is a common setup next to a waterfall or stream where you want the filter hidden from view. It can also be installed above ground beside the pond if that suits your layout better.

What's covered under the 2-year warranty?

The 2-year manufacturer's warranty covers the filter housing and its components. Consumable parts that need regular replacement — filter pads, the UV lamp, and the UV quartz sleeve — are not covered, since these are designed to be swapped out as routine maintenance.

Pondmax | SKU: 23PE279

PondMAX Ultra Series Pressure Filters

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$329.98

Options (Filter Size): Pondmax PF750UV Pressure Filter w/ 9W UVC

Options (Filter Size)

Pondmax PF750UV Pressure Filter w/ 9W UVC Pondmax PF1200UV Pressure Filter w/ 13W UVC Pondmax PF2400 Pressure Filter (NO UVC) Pondmax PF2400UV Pressure Filter w/ 18W UVC Pondmax PF3600 Pressure Filter (NO UVC) Pondmax PF3600UV Pressure Filter w/ 24W UVC Pondmax PF4800UV Pressure Filter w/ 36W UVC Pondmax PF7200UV Pressure Filter w/ 55W UVC

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A Complete 3-Way Filtration System

Water enters the pressurized housing and passes through three stages before it's returned clean to your pond or waterfall.

Mechanical Filtration

Foam media traps leaves, debris, and suspended solids as pond water is forced through the housing, giving you the first line of defense against cloudy water.

Biological Filtration

Beneficial bacteria colonize the filter media and break down fish waste and organic debris, converting ammonia and nitrite into safer compounds — the same biological process that keeps a healthy pond ecosystem stable over time.

UV Clarification (UVC Models)

Choose a UVC model and water also passes a built-in ultraviolet lamp before it exits the filter. The UV stage targets free-floating algae cells, which is what turns pond water green, so you get clearer water without added chemicals. UVC wattage is matched to each filter size, from a 9W lamp on the PF750UV up to a 55W lamp on the PF7200UV.

Built for Fast, Easy Cleaning

PondMAX designed the Ultra Series around a user-friendly, low-hassle cleaning process, so keeping the filter running at full capacity doesn't mean digging it out of the ground every time. That's a meaningful upgrade if you've dealt with older pressure filters that require disassembly just to rinse the media.

Install It Anywhere — Above Ground or Buried

Because the housing is pressurized, the PondMAX Ultra Series doesn't rely on gravity or elevation to work. You can bury it in the ground up to the rim for a clean, hidden look next to a waterfall or stream, or set it above ground beside the pond if burial isn't an option. Either way, it connects in-line with your pump and can feed directly into a waterfall or spillway.

Choosing the Right PondMAX Filter for Your Pond

Pond size, sun exposure, and fish load all affect which model you need. A shaded, fish-free water feature can run a smaller filter than a koi pond in full sun, since fish waste and algae growth both increase the biological load on the filter. Use the "with fish/full sun" column below as your baseline if you keep koi or goldfish, and the "no fish/shaded" column if your pond is primarily a water feature.

Model	Max Pond Size – No Fish/Shaded (Gal.)	Max Pond Size – With Fish/Full Sun (Gal.)	Max Flow (GPH)	UVC Wattage	UV Cord Length
PF750	750	350	1,000	9W (UV model)	16 ft
PF1200	1,200	600	1,200	13W (UV model)	16 ft
PF2400	2,400	1,200	2,400	18W (UV model)	16 ft
PF3600	3,600	1,800	3,200	24W (UV model)	16 ft
PF4800	4,800	2,400	3,600	36W (UV model)	16 ft
PF7200	7,200	3,600	4,000	55W (UV model)	16 ft

Model	PF750	PF1200	PF2400	PF3600	PF4800	PF7200
Max Pond Size (Gal.) (No Fish/ Shaded)	750	1200	2400	3600	4800	7200
Max Pond Size (Gal.) (With Fish/ Full Sun)	350	600	1200	1800	2400	3600
Max Flow (GPH)	1000	1200	2400	3200	3600	4000
UVC Watts *For W/ UVC models	9W	13W	18W	24W	36W	55W
UV Transformer Cord Length (FT)	16'	16'	16'	16'	16'	16'

What's Included and Warranty Coverage

Every PondMAX Ultra Series filter is backed by a 2-year manufacturer's warranty covering the filter housing and components. Wear items — filter pads, the UV lamp, and the UV quartz sleeve on UVC models — are considered replaceable parts and aren't covered under warranty, since they're expected to be swapped out periodically as part of normal maintenance. Printable instruction manuals are available for both the PF750–PF3600 range and the PF4800/PF7200 models, covering full setup and cleaning instructions.