Quick Stats Minimum Tank Size: 10 Gallons (37 Litres) Care Level: Very Easy Water Conditions: 5-8 pH and Soft to Moderately Hard Temperature: 64–86 °F (18-30 °C) Maximum Size: 24 inches (60 cm) Hygrophila polysperma, also known as dwarf hygro, Indian waterweed and dwarf hygrophila is one of the hardiest aquarium plants available in the aquarium hobby. It is so … [Read more...] about Hygrophila Polysperma – How to Grow and Care for Hygrophila Polysperma in the Home Aquarium