Bluelab pH Controller ConnectBluelab pH Controller Connect Details Clever monitoring, dosing and data logging of solution pH levels. Made easy. Sometimes the more you know, the better. And when it comes to managing the pH of your nutrient solution, exact knowledge makes a world of difference. Our clever pH controller Connect automatically monitors and fine tunes the pH levels for you. Set your pH parameters and let the Bluelab pH Controler keep you on point dosing in your set