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.
For crops grown in hydroponics, flushing should start a week before the harvest. All the grower needs to do is to replace the hydroponics solution with distilled water. Changing the water 2 to 3 times before the harvest will thoroughly remove any remnants of the hydroponics from the plant. If your plants were grown in soil with commercial fertilizer, flushing should be done 2 weeks prior to harvest. To speed up the whole process, dont water it 2 days before harvest. Provide continuous water flow for plants in hydroponics condition. The moment that the water supply is stopped, the plant will die.