yes because if you put to much it will overflow and die and if you put to less it will also die. it need s about 350 gallons per week. saw grass nedds ton of water per month. DWEEj
Mature lawns require 1 inch of water per week. It is best to water deep and infrequently, so you will want to water twice a week, giving the lawn a half inch of water per watering.
No you can't!!!The grass will die because they don't have the cold water they need. Hot water will make them die because it steams them. So water them with COLD water!!