Hello, I have so much to learn. I am the mother to 5 children and we are learning and ready to build our system for a homeschool project. I am confused about a ebb and flow drain or bell syphon. Not sure what to use. My husband is going to need to help me with this one. So far we have a 150 gallon stock tank and 2 3x3 grow beds that are about 8 inches deep. I hope deep enough. Can you recommend the best dvd,book or instructional source? How much sunlight do I need? I can get full sun if needed but my outlet is in the back of my house and it only gets half day full sun. I am in Hawaii and temps range from 60s to 92 degress.
Thank you
Stacy