Hey nice rigged AG grow man. Probably saved yourself like $150! If you've still got that drip system going in that new tub you're using I say ditch it as long as the roots have reached the surface of the water in the rez. You don't wanna fuck around with any stem/root rot, of course I don't need to tell you that. Also, just get a pH adjustment kit for like $15 and then you can use regular tap water instead of the poland springs. Your nutes are gonna change the pH of that water anyway, and theres really not many things more important than monitoring your pH when it comes to hydro. What type of nutes are you using anyway? And what strain MJ is that?