It’s not hard to understand why pool owners do everything they can to avoid an algae outbreak in their pool. Once algae takes hold, it can quickly spread and take over your pool. What causes algae in pools? Pool algae are ultimately the result of favorable growth conditions. These conditions include: Low chlorine levels Warm water A food source (phosphates) Algae is a pest organism that is always present (even a teeny, tiny microscopic levels) ready to bloom in the conditions that are right. In general, it is easy to...