I will add before and after pictures, probably Thursday. Sorry for the long post, this is My own yard. I have never experienced TOO I recently tilled my "concrete" like very sandy soil with a dingo soil cultivator. It broke the "sand" up very well. It became soft of a sandy soil. Almost like beach sand. After I did my rough grading, I installed a sprinkler system. MP rotators, 2000's. Head to head coverage, the whole 9 yards. I did my pre-final grade using a 36" landscape rake to where it was smooth as a babies butt. Then used a sod roller to compact the sand some. I ran the sprinklers for 30 minutes or so. Let it dry out some....Sod rolled again. Re-graded for one last time using the 36" rake. One week ago tomorrow, I laid 7 3/4 pallets of Empire Zoysia. Came in great shape. Per the sod seller, I applied a fungicide and in insecticide as his recommendation. I applied T-Storm and bifenthrin granulars. The sod went into shock within approximately 2 days as it should of. Not the best of time to plant sod, but I had to get it done. It was 94 degrees when we laid it, and has not had a day of sunshine under 95 degrees yet, most days 98 - 100+. Friday I began watering 2 times per day for 30 minutes each cycle. Once in the early AM and once at around 3 pm (when the heat index his 105 or so). The grass has greened up very well. Improving daily. I may have 10 or so squares that are less than 70 percent green up. The rest is 90 plus. There is a spot that is roughly 500 square feet in the once concrete like soil area that is so soft, not muddy, just soft. When walked on, you sink to almost your ankles, but only in the spot that was literally like Concrete. Is this because the soil under it is so hard that water is not able to perculate? It is only in this spot that were very, very hard. OR am I simply overwatering? I am afraid to cut back until the yard has rooted in. Anything to topdress with? Should I just keep rolling the sod until it compacts then top dress with top soil this fall or spring?