Thanks bro, your system has been an inspiration to me.
I was gonna go STG just because it looks easy, and the product sounds good. . . I did see that they wont go all the way to the top, I figured I could just top it off with some hydroton on top to fill up the bucket.
My pH drifts up because my tap/RO comes out at about 7/6.8, so when I hook up the automatic top off, that will also bring up my pH automatically, instead of just when I top it off by hand. I figure a pH controller can counteract that. yeah another level of complexity will add a greater chance for failure, but I'm a tech freak bro. . . eventually I am going to buy an Intellidose. not now but mark my words, 420mag will see an intellidose journal from me at some point.
thanks for your support bro, I hope I succeed this round too. sitting on it, thinking about it, I am getting fairly disappointed with the performance and difficulty level of the wheel. it's just too high maintenance.
WOF, I use GH Flora series and do daily top offs to my rez with water only. It is RO and the pH is 7 or higher. You would think that this would simply increase the pH number over time and it does rise for about 5 days but then will settle in often times. I don't know what the buffering agent is that GH uses, but it is quite effective. A single pH adjustment after first mixing the batch is all that would be necessary.