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.
Often times hydroseeded lawns will begin to germinate is as little as 7-14 days. Most grass types will take between 3-4 weeks to fill in and depending on how often the lawn is watered, and the type of grass seed used, it can take up to as much as 8 weeks to see strong growth. Don't forget to fertilize after 4 weeks.