Review on 🌿 Microbe-Lift Algaway 5.4, 1 gallon - Varying Color Bottle by Sandra Landgrebe

I bought a smaller bottle of this and it worked great. The algae would die off, foam up and then the water would be crystal clear, but nothing happens to this big bottle. I even tried using twice as much as before but nothing. Not sure if this is a counterfeit product or if something has been changed in the formula but a total waste of $50 for this large bottle. looser.