Method Seven Catalyst LED Phone Filter Plant Nutrients Simple push button pH calibration

Simple push button pH calibration system

Up to (5) of the OA6-110 modules can be connected to a single Aqua-x

Doesn't leave objectionable residues

Digital Sugar Refractometer for general purpose with automatic temperature compensation (ATC)

0–7000 ppm (700 ppm) and 0–50ºC/32–122ºF

Method Seven Catalyst LED Phone Filter Plant Nutrients Simple push button pH calibrationMethod Seven Catalyst LED Phone and Tablet Camera Filter Create professional quality media in your grow room with the Catalyst Phone Clip Photo Filter. The Catalyst clips securely to your cell phone or tablet, balancing the color spectrum with a high quality Carl Zeiss lens for insane optical clarity when used under HPS (High Pressure Sodium) lights. The filter screw mount is a 37mm aluminum alloy ring and can be removed and adapted for security