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The tuna can test is a great way to ensure you are watering your lawn enough. It’s easy as one, two, three:
1
Turn on your sprinkler system.
2
2. Place an empty tuna can in the area you are watering. If you don’t have a tuna can, just make sure your container is at least 1 inch tall and has straight sides.
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3
Time how long it takes to fill the can to one inch of water.
That time is how long your sprinklers should run twice a week.