Frog 90-Day GoodBye PhosThe FROG 90 Day GoodBye Phos is a fast acting dual purpose phosphate remover that will protect your pool for up to a month from phosphate buildups while also improving filtration. Algae feeds on phosphates, which can enter the pool in many ways such as source water, ground runoff, fertilizers, animals, and weather conditions. This simple to use product is in a pre filled bag, that you simply drop into skimmer baskets. Use this product to prevent