Bio-UV 20 Professional UVC Unit

Bio-UV 20 Professional UVC Unit

Professional stainless steel UVC for large pond and koi filtration systems

Bio-UV 20 Professional UVC Unit is part of the Bio-UV UV range and is designed to help improve pond clarity by exposing pumped pond water to ultraviolet light. A correctly sized UV clarifier is one of the most effective ways to deal with green water, especially when the pond is otherwise well filtered and the water is passing through the unit at a sensible flow rate.

UV treatment does not replace mechanical or biological filtration, but it supports the system by tackling suspended algae and reducing the amount of free floating microscopic growth in the water column. For best results, the UV should be installed where it can receive well filtered water, be isolated for servicing and be accessed easily when the lamp or quartz sleeve needs attention.

Choosing and installing this UV

Choose the UV model according to pond volume, fish stock, sunlight, pump flow and the level of clarity you want to achieve. Koi ponds and heavily stocked systems usually benefit from stronger UV sizing than lightly stocked wildlife ponds, while large filter systems need a unit that can handle the intended flow without creating unnecessary restriction.

• Helps clear green water caused by suspended single celled algae
• Supports clearer water when matched to the correct pump flow and filter system
• Useful on koi ponds, ornamental ponds and larger filtration systems when sized correctly
• Designed to be serviced with replacement UV lamps and quartz sleeves
• Works best when fitted with access for annual lamp changes and regular quartz sleeve cleaning

Technical specifications

• Brand: Bio-UV
• Model: Bio-UV 20 Professional
• Recommended pond size: up to 8,000 gallons
• UV power / power consumption: 55W
• Maximum flow rate: 4,500 GPH
• Chamber diameter: 15cm / 6 inches
• Height: 69cm
• Weight: 9kg
• Housing material: 316L stainless steel
• UV lamp life: approx. 9,000 hours
• IP rating: IP54
• Warranty: 5 years on stainless steel body; 1 year on electrical components and lamp when installed as per manual

Compatible UV spares

UV lamps gradually lose effective output even when they still appear to glow, so replacement bulbs and clean quartz sleeves are important service items. The most relevant spares are linked below to make lamp and sleeve checks much easier.

• Browse UV spares
• Pond UV bulbs
• Bio-UV replacement bulbs
• Bio-UV replacement quartz sleeves

Other models in this range

• Bio-UV 30 Professional UVC Unit
• Bio-UV 40 Professional UVC Unit