Ron, I am a newbie, but I very interested in becoming a competent hydro-gardener. I am growing tomatoes in a
ebb and flow system. I would like to know how far up the solution should go a 5.5" x 5.5" x 6" inch rockwool cube. I am watering 5 times a day for in 15min. cycles.
-your site is a goldmine! Sam @
sgolwala@hotmail.com