“A fully contained hydroponics system? That sounds like something that belongs in Willie Nelson’s house rather than a preschool classroom. As an educator looking for innovative ways to teach kids about science, I found the AeroGarden to be an ideal way to unleash a 4-year-old’s green thumb. After an effortless assembly, we simply added water, dropped in preseeded grow plugs, and turned it on. Salad greens sprouted within three days and were big enough to eat within two weeks. A light prompted me when it was time to help my students replenish the water and add nutrient wafers. As the plants grew, even my picky eaters could be spied snacking on lettuce leaves — much to my (and their parents’) delight. And at 22 x 19 x 10.5 inches, the AeroGarden is the perfect size for a classroom yet still yielded enough green stuff for about 70 kid-portioned salads”. — Brian Silveira <More> & See: aerogrow.com
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Believe it or not…this thing actually works! I purchased a couple of these a few months ago from the AeroGarden Store (http://www.hydroponic-home-garden.com) because everyone else was backordered…I think everyone is backordered now too. But overall, this is an awesome product and would be a great gift for anyone living in a cold or cramped place with no sun, and no room for a garden of their own.
The attributes of hydroponics growing will produce larger crops in a shorter time frame than conventional gardening because you are controlling the plants enviorment. Hydroponics growing indoors is another advantage to eliminating plant disease and pests.
True hydroponics growing systems are ones that use just a solution of nutrient and water along with proper lighting conditions to feed the plants roots.
Another type growing system are ones that use a medium of gravel,hydropon clay pebbles or rockwool. These latter systems are a little more forgiving for the beginner.
Either type of these growing will require monitoring the nutrients and the PH level of the solution on a daily basis and adjusting as required to maintain healthy plants.