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.
Almost any kind of leaf lettuce will grow quickly in a hydroponic system. Some of the types to try include Romaine, bibb and butter crunch, all of which are ready in three to four weeks. Head lettuce, such as iceberg, will grow well, but the heads take about twice as long to be ready as the leafy types. When growing leaf lettuce, harvest just the outer leaves of the plants and leave the inner leaves to grow, to give you a crop you can harvest almost every day.