Frog Leap All-OutFrog Leap All Out is a 90 day algae preventative that provides pool owners with a an effective algae killer that will work with the Frog Leap System, keeping your pool algae free for 90 days if proper chemical balances are maintained. All Out also dramatically reduces your pool's need for chlorine and keeps your water crystal clear, while reducing the chances of swimmers developing red eye, skin irritation, or swimsuit fading. This product is so good