Thank you for the links.
Hydroponic growing doesn't sound appealing to me at all.
We all consume chemicals by the shovel-fulls from eating store-bought hydroponic tomatoes, cucumbers, berries, etc, especially off-season.
If we spend our time and energy on gardening, don't we want 100% good and natural stuff for a change?
My vote is for organic growing, using natural nutrients coming from home-made compost and natural solar energy (passive sun warmth that is). :)
Vickie.