Pool technology marches on! Don't like chlorine? The Renaissance UV and Ozone system is for you. It can kill patogens such as crypto and giardia that are very difficult to kill wilth chlorine. Systems such as this are used in water parks thoughout Florida. A high energy, long life bulb produces the UV and Ozone. With this system you will still have to have some chlorine in the water. But, it can be a very low level. Call us at (239) 574-1133 for more details.