Answer: It sounds as though your soil needs some help but now that you have resodded a second time, you probably don't want to remove the sod and properly amend the soil. The standard advice, before planting turf (seed or sod) is to rototill the area, spread 3-4 inches of organic matter over the top, and rototill it in to a depth of 8-10 inches. Since your sod is already in place you may be able to help it along by renting an aerator. A core aerator will remove one inch by three inch plugs from the lawn. Leave the plugs on the lawn and they will dissolve in rain or water from the sprinklers. After aerating spread a thin layer of sand or compost over the area and water it in well. The sand or compost plus the soil from the plugs will work its way down into the soil to help loosen it, and will provide places for the water to go. The roots of your sod will grow into these areas and the result will be a lush, thick lawn. Good luck with your lawn!
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