hi the wife and i opened a hydro store featuring bubbleponics any suggestions on what to say to convince these dirt poeple to convert? i think this is one of the best hydro systems out there for the money i had a fella come in yesterday and wants to set up a 50 plant site gonna buy 2 of the 24 site kits and then changes his mind and walks out the door.aaaahhhh what to do?