Preheat the grill for 5 minutes. In a medium bowl, use your hands to mix together the mince, Worcestershire sauce, black pepper, garlic salt and onion until the ingredients are evenly distributed. Shape the mixture into hamburger patties. Place the hamburgers on the grill and cook for 7-8 minutes, or until cooked.
In general, tomatoes take around 60 to 90 days to grow and then ripen. In a hydroponic system, because you are providing the plant with the absolute best growing conditions, I would expect this to be sooner, and you should be enjoying your tomatoes within 60 days at the very most.
Any seed type can be sprayed out of the hydroseeder onto your lawn area and within 3-4 weeks (in the growing season) you will see some growth and 6-8 weeks it should be ready for the first mow. Estimates of the cost difference between sod and hydroseeding, peg the latter at 1/2 to a 1/3 the price of sod.