Ron,
I am considering starting a small commercial greenhouse, growing tomatoes for the local markets. I am trying to do some planning, and want to get your expert opinion on what type of system would be best for commercial purposes. I am considering either a drip/flow system like your gallon bleach bottle setup, or a water culture system which uses square PVC tubes with net pots, and a spray line to infuse oxygen into the
nutrient solution. (Similar to the AeroFlo by GH ) I have built both of these systems on a small scale (Both very cheap compared to buying them) but haven't done large scale testing on either. There are pro's and cons for each I'm sure. I'd just like to hear your opinion on them. Thanks. PS I live in the Atlanta GA area, so year-round growing is pretty feasible.