Bluelab External Lockout With Alarm Box varo__315mm Each cylinder is equipped with

Each cylinder is equipped with an internal liquid siphon dip tube so that inverting the cylinder is not required to deliver liquid butane

An O6i system is bundled with 'Light Harvesting' sensors that measure the natural light in your greenhouse

plant extracts

and put the Rockwool tray into the solution

Basically this means they are plant foods that can be used in both hydroponic systems or as a liquid fertiliser for non hydroponic growing

Bluelab External Lockout With Alarm Box varo__315mm Each cylinder is equipped withThis External Lockout & Alarm Box connects the Bluelab Pro Controller to external switches, like a float switch or greenhouse alarm system. Upon activation of the switches, the Bluelab Pro Controller is locked out, halting all dosing. It also features a built in alarm which can be disabled, plus an external alarm (horn or flashing light) that can be connected. Additionally, an external lockout sensor can be connected (e. g. water flow sensor) to