Bluelab PH Probe with 2000 mm cableSensor probes do NOT last forever and will eventually fail. This pH Electrode is gel filled making it maintenance free! Best of all, its designed for use with ALL Bluelab pens, meters and monitors. Features: Fully waterproof, submersible to 10 meters Quality BNC connection Tough polypropylene barrel Heavy duty thick wall glass stem Warranty: 6 months Growers Tip: It is advised that probes be replaced every 12 months, especially when measuring in

away from your precious plants

Micro-75RO

The same upgradeable feature like Hydro-X gives you the ability for life-time improvements

Recommended use is for 24 hours: but if less than 24 hour is required

Electrode: Glass sensor and reference tube electrodes

With its comprehensive benefits and advanced formula

Razor sharp trim blade

Available in 2 versions

it is now the solution for those facing unique height restrictions

5" H x 16" W x 8

It operates on standard 115V electric and comes with a 6' power cord

roots die and new roots are formed