SANA ALGAECIDE LIQUID 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. Routine and weekly additions of SANA ALGAECIDE LIQUID establish a buffer action against temporary loss of chlorine which particularly during hot sunny weather, leads to conditions favouring very rapid algae growth. If allowed to develop unchecked, algae can grow very quickly causing greatly increased chlorine demand. This product is slightly toxic to fish and treated effluent should not be discharged into public water.