Activator D - Pool Algae TreatmentActivator D Pool Algae Treatment Activator D: The easier, safer, more economical, and effective way to treat and maintain the sparkle in your pool! The product comes in two bottles a powder and a liquid totaling 850 grams. This is enough for a 50,000 liter pool for one month. It is safe, environmentally friendly, economical, and very effective. A neglected pool will need a double dose to start off, but this will effectively kill the algae and clear