Sagittaria subulata, the awl-leaf arrowhead, narrow-leaved arrowhead or dwarf sagittaria, is an aquatic plant species that grows primarily in shallow brackish water
This fast developing plant looks like grass and can grow over the water level. Its unstemmed leaves will develop to form thick bunches. It is a plant capable in land and/or water, and will grow either partially or fully submersed.
Sagittaria is a totally undemanding plant that can withstand hard water as well as water with a surplus of organic substances.
Not sensitive to temperature change, it can flourish in exceptionally poor planting substrate if given a liberal amount of light.
This aside, the best possible water conditions would have a temperature of 72-82F, an alkalinity of 3-8 dKH and a pH of 6.5-7.5. Furnish the plant with direct lighting of at least 2 watts for each gallon of full range (5000-7000K) lighting.
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