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What is the most effective way to run my sprinkler system? - sprinkler trimmer

I live in north Texas, my garden is half of the Bermuda and Saint-medium term. Augustine. I'm trying to get the ST's. Augustin construction to resume. I believe pretty courtyard decorated Burmuda brevity too thin. I run the irrigation system for 20 minutes at each station is approximately 3 / 4 and every two days. Is there an effective I can run?