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.
PH is one of the most important factors in Hydroponic gardening. It makes your nutrients available to your plants. If you are feeding your plants from a recirculation nutrient tank change the nutrient solution every 10 to 14 days and stop all nutrients 3 to 14 days before harvesting edible plants or fruits.