Classic Ebb and Flow: why aren't more people doing it?

Yea I used hydroton and thought it worked well. I also had about a 20 gal reservoir. Only the 2 plants, I was flooding about 7" every 4 hrs for 15 minutes. I changed the veg res at about 3 weeks and then I ran the same res for the entire grow, the flower is good, I just wonder how much better it could have been if I changed nutes every week, live and learn I guess.
 
Top