Bluelab pH Controller STANDARD WIFIMonitors and Automatically Maintains the pH of your Reservoir Tank When it comes to pH levels, it's best to be in the know at all times, because pH issues can often devastate plants, making nutrients unavailable, causing deficiencies and stress. The Connect differs to the standard controller, with the Bluelab pH Controller Connect, you can manage the pH levels of your reservoir from anywhere in the world, thanks to its secure, wireless connectivity!