Bluelab pH ControllerBluelab pH Controller Please note: This product is purchased to order and will take slightly longer be delivered. Managing your pH just got easy! This clever little kit both monitors and adjusts pH levels for you. It's completely plant safe, with a dosing lockout feature to prevent over dosing. If there's a power loss, your system will automatically continue dosing once it's been restarted. It's easy to use with an on screen guide. Simply set it up