I'm frustrated that I can't share my hobby with my kids. They are 8, 9, and 10. So I was wondering what kinda veggies I should grow with my kids maybe with a small setup in their bathroom. I was thinking of trying to grow some of the more expensive veggies to save on our grocery bill. I know tomatoes are successfully grown hydroponically, but what are some others. Will I have trouble using one reservoir with different species since they will probably need different ph levels and such? Any advice?