A water soluble dye designed for use in lakes, ponds, decorative water features, and other impounded bodies of water with limited outflow. Blue springs beautifies murky, cloudy, or off colored water with a pleasing, natural blue tint.
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.