DuckWeed

Water temperature: Duckweeds grow optimally in water temperatures between 15 and 32 °C (60 – 90 F). Above or below that range, Duckweed just sort of sits there and does not grow. pH: Duckweed survives at pH between 5.0 and 9.0 but grows best at a pH range of 6.5 – 7.5. Hardness: In general, Duckweed does not care about hardness. It can easily tolerate soft or hard water. Nonetheless, for optimal growth and development of this plant species, maintain water hardness in the range of 2 – 15 GH, 1 – 12 KH.