Zapp Pure UV Sterilizer – ZP-5
The Zapp ZP-5 is a professional-grade solution designed for serious pond enthusiasts and dedicated professionals. Rated for up to 6,000 gallons and capable of handling 2,100 gallons per hour (GPH), this high-performance UV sterilizer delivers over 70,000 microwatts of algae-killing power.
Engineered to work efficiently with low-amperage pumps and high-flow filtration systems like the AlphaOne Koi Pond Filtration System, the ZP-5 features a 4-inch UV vessel with 2-inch inlets and outlets, ensuring minimal flow restriction.
Technical Specifications
| Feature | Specification |
|---|---|
| Max Pond Capacity | 6,000 gallons |
| Flow Rate | 2,100 GPH |
| UV Output | Over 70,000 microwatts |
| Vessel Diameter | 4 inches |
| Inlet/Outlet Size | 2 inches |
FAQ
What is the maximum pond size the ZP-5 can handle?
The ZP-5 is rated for up to 6,000 gallons.
Does the ZP-5 work with high-flow filtration systems?
Yes, it is designed to work effectively with high-flow filters such as the AlphaOne Koi Pond Filtration System and low-amperage pumps.
What is the UV output power of the ZP-5?
The ZP-5 delivers over 70,000 microwatts of algae-killing power.

Nathan Welch –
Installed the ZP-5 in my 5,000-gallon koi pond and noticed a significant reduction in algae growth within a week. The flow design allows water to pass through smoothly without pressure drops. Works well with my AlphaOne filter and has been reliable over several seasons.
Edward Bond –
The unit performs better than expected. Algae levels dropped quickly after setup. The 4-inch vessel and 2-inch ports make it easy to integrate into existing filtration. Slight learning curve with initial setup, but worth the effort.
Keith Randall –
After installing the ZP-5, my pond has remained clear even during summer blooms. The UV power is strong and consistent. No clogging issues reported after three months of use. Highly recommend for serious pond keepers.