Grass and Bamboo: Yard Circles...Help!, 1 by Connie_G

Connie_G wrote:
I had my yard guys lay down good, healthy (I guess?) St. Augustine grass in two small areas of my front yard about a month ago. They get watered 2 times a day for 20 minutes. Now I have "crop circles" forming! I called the guy who installed it and he said to cut off the water to that area and see what happens. Said it's probably a fungus.
Anyone have experience with St. A. getting TOO much water ....or is there any other reason for the circles??? Grubs? I grew up with SA and it was always just THERE and beautiful with no sprinklers, fertilizers, mulching, etc.

Thanks in advance! I'll post before and "now" pics. This is the good one.