I can't help you with the grub question, but you need to water that new sod daily for at least two weeks. When sod is harvested its roots are cut, putting great stress on the grass. Water will stimulate root growth, as well as topgrowth, and water is required to produce carbohydrates via photosynthesis. Mow your sod when it is at 4 inches, down to 3 inches. Don't ever mow more than 1/3 of the blade length. Keeping it on the longer side will allow deeper root growth, provide more area for photosynthesis, and prevent weed growth. After two weeks if you pull on the sod and it is attached to the ground then you can cut back on the watering, but don't eliminate it completely. TF generally requires one inch of water per week, preferably all at once, or half an inch twice a week. In times of high heat and no rain you might need to water more. The grass will tell you when it needs water. If it looks dry and a bit wilted you need to water. Areas near driveways, sidewalks, and the street often need more water as the heat is much greater in those areas. Tall fescue generally gets fertilized 4 times a year. Once around Memorial day, once around Labor day, once around Halloween, and once around Thanksgiving. This schedule will vary with location and climate. Never fertilize in the summer when temps are at their highest. Avoid weed and feed products. If you want to put weed killer down, do it seperately. Weed killer and fertilizer schedules rarely line up. Hope this helps.