ALGAECIDE LIQUID -Algaecides are chemical substances that are specifically used to control or kill algae. It is a strong algae depressant fully compatible with alkalizing and flocculating agents normally used in swimming pools. Algae growth is the main cause of colour in swimming pool water. Algaecides (or algicides) are used to control or suppress many species of planktonic, filamentous, and branched algae. Specifically that may be controlled or suppressed with algaecides include red macro-algae (Bangia atropurpurea), diatoms (Cyclotella cryptica, C. pseudostelligera and Stephanodiscus binderanus)2, and grass kelp (Enteromorpha flexuosa).