ULTIMA II 10,000 filter for Koi ponds up to 10,000 gallons.
No channeling * Minutes to backwash * Can handle heavy fish loads * Seeded with bacteria * Filter can be buried * Unique tubular design protects bacteria while dislodging unwanted debris.
Features: 2" inlet and outlet
Dimensions: 42" x 24.5"
EasyPro 20 Watt Rock...
This 20 watt submersible light is hidden inside of a simulated rock!
Measures 6" wide x 4-1/2" tall x 4" diameter
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If you have a quartz sleeve make sure and clean it with acetone when you change your bulb to truly have a clean quartz sleeve. As a general rule of thumb, you should change your UV bulb after about 8,000 hours use. This is about once a year.