Bluelab 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 and forget about it, knowing the pH is taken care of. Complete 14 piece kit Automatically monitors and fine tunes pH Hands-free monitoring Plant-safe, green back lit LCD with adjustable brightness Large, easy to read displays Temperature compensation feature for accurate reading Easy to navigate, program and adjust Simple push button pH calibration On-screen guide Flashing high/low alarm with control lockouts Dosing lockouts to protect from over-dosing Automatically continues dosing on restart if there's a power loss Water resistant Designed for wall mounting International power supply 4 metre acid/alkali resistant dosing tube included Replaceable double junction pH probe Separate temperature probe Replaceable peristaltic pump and tubes Suitable for system pH with reservoirs up to 760 Litres Use with undiluted pH adjuster We recommend:You'll need to buy a good pH adjustment solution to go with this product.