Tetra Pond AlgoRem – quick action against green water (suspended algae). A clean pond in one day. Removes suspended algae in a short time. The first effects are visible after just a few hours. Effectively removes phosphates that feed algae. A fast solution to the problem. Works quickly and precisely. Not for use in fish holding! Available in packaging sizes: 250 ml, 500 ml, 1 L, 3 L. Note: Anti-algae products should be used with caution. Read the label and product information before each use.