Wow, awesome thread! I just finished reading all 164 pages. Lots of great information here, I feel much more comfortable with this ebb and gro. I just finnished my first e&g grow. I didn't flush my res a single time until then last 2 weeks, and the plants still turned out pretty good. I've decided I'm going to do 35 buckets this next run. But this time I plan on changing the res biweekly in veg, and early flower, then weekly during the heavy drink/feed cycle.
I've seen a lot of talk regarding the sludge that accumulates atthe bottom. Has anyone tried draining their res, then just dumping water down the last few buckets in the line? My theory is hopefully this will help push the sludge into the controller, and out into the res. I think I'm going to try that, along with a wet vac to suck that sludge out of the controller every week.
Also, this was my first hydro grow, and unfortunately I got a nasty spider mite infection during the final 2 weeks (during flush). I'm guessing since I flushed with just water, and no nutes, the plants were ultra week and vulnerable to the little bastards. Do youguys have any suggestions on preventing that in the future?
My last question is more about nutrients. I am using the 3 basic general hydroponics nutes, and I really like the simplicity of having just 3 ingredients. However, I also feel like if I'm going to do this, I want to get the very most I can. I've heard some folks here have switched to advanced nutrients. Do you guys have any experience there? Like have you switched to a new brand of nutes and see a major difference?