Here is an image of my current setup. The blue circle is the RO tank. It pumps RO to either of the sites (yellow box). The red lines represent valves and are used to dictate which pump can flow liquid and to where. The reason to have optional directions of flow is because sometimes that pump is flowing to the plant, sometimes through the circuit to collect a PH and EC reading, the other side of that circuit to be corrected or dosed with nutrient or PH corrector, and at the end of the week, it all must flow out the main waste line. Right now, I’m using manual twist ball valves and poly tubing, but I don’t have my dosers in play, nor do I yet have the EC and PH probes and circuitry, but all the plumbing is ran. I miss the convenience of Dial-A-Dose, but not having it directly plumbed into the plumbing circuit introduces problems of air getting in the lines and salts quickly gunking up. Not having the ability to electrically actuate my valves has my project at a stand still. I’m currently printing a new better printer and hope any of my servo valve designs will produce a functional valve that I can attach a servo to. Until then, I twiddle my thumbs.
