How it Works:
Mechanical Filtration:
This first stage of filtering removes suspended debris. Water is pumped into the filters and passes through separate layers of filter media - coarse and fine layers - to effectively remove all sizes of unwanted debris.
Water Clarification:
The final filtering stage uses light and adds clean, clear, and healthy water back to your pond.
Cleaning Your Filter:
Flushing the filter to remove dirt and debris is as easy as shutting down the pump, rotating the valve from filter to flush, and turning the pump back on for as long as it takes for the water to run clear. When the water runs clear, you can stop back flushing and return to normal operation.
Using the Handle to Purge Filters:
Pumping the handle while back-washing compresses the filters for an efficient cleaning, while not compromising your existing beneficial biologicals. This naturally converts harmful ammonia and other waste into healthy nutrients that help aquatic plants and support a healthy pond environment.

How it Works:
Mechanical Filtration:
This first stage of filtering removes suspended debris. Water is pumped into the filters and passes through separate layers of filter media - coarse and fine layers - to effectively remove all sizes of unwanted debris.
Water Clarification:
The final filtering stage uses light and adds clean, clear, and healthy water back to your pond.
Cleaning Your Filter:
Flushing the filter to remove dirt and debris is as easy as shutting down the pump, rotating the valve from filter to flush, and turning the pump back on for as long as it takes for the water to run clear. When the water runs clear, you can stop back flushing and return to normal operation.
Using the Handle to Purge Filters:
Pumping the handle while back-washing compresses the filters for an efficient cleaning, while not compromising your existing beneficial biologicals. This naturally converts harmful ammonia and other waste into healthy nutrients that help aquatic plants and support a healthy pond environment.
Half Off Ponds HOPBP-3000H Pressure Filter 24-Watt UV for Ponds To 3,000 Gallons
- Maximum pond size is 3,000 gallons and 2,000 gallon fish ponds. Pump flow rates: 1,200 - 3,100 gallons per hour. Multi-Stage Mechanical Filtration removes coarse And fine floating particulates.
- 2-Stage filtration removes coarse and fine floating particulate to promote a healthy pond environment.
- Built-in clarifier with 24-watt clarifying bulb assists in water clarification. Glowing monitor indicates clarifying light is functioning properly. Visible indicator signals when pressure filter requires backwashing.
- Heavy duty, watertight housing is easily accessible for filter maintenance. Can be partially buried to conceal filter.





FAQs & Calculations to Help Select the Correct Kit
Rectangular Ponds
Example: A rectangular pond 15’ long, 10’ wide and 1.5’ Deep Pond is...
15’ x 10’ x 1.5’ x 7.48 = 1683 Gallons
Oval Ponds
Example: An oval pond 15’ long, 10’ wide and 1.5’ deep is...
15’ x 10’ x 1.5’ x 7.48 = 1683 Gallons
Round Ponds
Example: 15’ long, 10’ wide and 1.5’ Deep Pond
15’ x 10’ x 1.5’ x 7.48 = 1683 Gallons
Streams
Example: 15’ long, 10’ wide and 1.5’ Deep Pond
15’ x 10’ x 1.5’ x 7.48 = 1683 Gallons
Water Garden, Few Small Goldfish
Example: 2,000 GPH pump for a 3000-gallon pond with 2’ waterfall.
Fish Pond, Several Small Fish
Example: 3,800 GPH pump for a 3000-gallon pond with 2’ waterfall.
Koi Pond, Several Large Fish
Example: 2,000 GPH pump for a 3000-gallon pond with 2’ waterfall.
Calculating Head Height
Example: 3' (vertical height) + 2.5 (25' of tubing) + 2' (for 2 elbows) = 7.5' of Dynamic Head Pressure
Note:It is important to take into consideration while calculating how much flow will be at the top of your waterfall by accounting for the head height due to the laws of fluid dynamics. Please refer to the flow chart above to help choose the correct pump.
Tubing Size | Efficiency GPH | Minimum GPH | Maximum GPH |
---|---|---|---|
0.5” |
< 300 |
60 |
420 |
0.75” |
< 720 |
300 |
900 |
1” |
< 1,200 |
700 |
1,500 |
1.25” |
< 1,600 |
900 |
3,200 |
1.5” |
< 2,600 |
2,000 |
4,400 |
2” |
< 4,800 |
3,000 |
6,800 |
3” |
< 9,000 |
6,000 |
14,000 |
4” |
< 21,000 |
14,000 |
28,000 |
6” |
< 42,000 |
33,000 |
60,000 |
About Half Off Ponds
Thanks for your business! We appreciate it!
- The Half Off Ponds Team
