The Aqua Frog can be connected to your existing pump and filter system via flexible 3/4" tubing. An attractive addition to any pond. Ultraviolet Sterilization is a proven, dependable and effective method for controlling and eradicating algae spores, bacteria and protozoa present in the water source. Ultraviolet alters or disrupts the DNA and RNA of target organisms. By properly implementing an Aqua Ultraviolet disinfections system in-line, the targeted organisms can be eradicated effectively with out any harmful residuals. Aqua's patented slim line lamps last an industry high of up to 14 months of continuous operation, no other lamp on the market lasts as long. These lamps have a 99.9% effective kill rate. Lamp changes are done easily from one end with the EZ Twist Cap.