ONE Pen Bluelab (EC, pH & temp) 35 litres If you want to run

If you want to run a fan/pump with different settings at night or you want to dispense CO2 using precise dosing at particular times throughout the day

Compact and with a comfortable grip it is easy to use

lead-free FlexiPot material allows improved gas exchange in the substrate

you can guarantee your plants will receive the optimum amount of light they need to thrive and flower

This medium has the perfect balance between the water retention properties of coir and the air pockets the perlite provides

ONE Pen Bluelab (EC, pH & temp) 35 litres If you want to runWhy use 3 different instruments when one can do it all?! This Bluelab all in one pen measures EC, pH and temperature. The unmatched accuracy and response time of the OnePen means you get all the information you need faster than ever. pH and EC on the display at the same time takes ease of use to a new level! The replaceable probe is a game changer, not only saving you money but also helps reduce waste, making it the sustainable choice. The OnePen is