TrolMaster Digital CO2 PPM Controller, for Regulator and Generator Cleaning + Sanitation The Bluelab pH Pen is

The Bluelab pH Pen is the latest innovation for hand held pH meters and is the ultimate handy solution for measuring pH

Horticultural-grade perlite for improved aeration and drainage

Fittings are 1/2 inch

and supports healthier root architecture and stronger vegetative and reproductive performance

This lamp pairs with DE 315W CMH fixtures and ballasts — note that short-wave ultraviolet radiation is present

TrolMaster Digital CO2 PPM Controller, for Regulator and Generator Cleaning + Sanitation The Bluelab pH Pen isTrolMaster BETA8 Digital CO2 PPM Controller TheTrolMaster BETA8 Digital CO2 PPM Controller is a simple and affordable way to control your CO2 injection device. Choose your desired CO2 parts per million (PPM) level and the BETA8 controller will automatically maintain that specified CO2 level. A built in photocell located on the remote sensor automatically deactivates CO2 injection during the night time. A remote sensor with 16' cable allows close