Titan Controls CO2 Regulator (10/Cs) The black hole punch includes

The black hole punch includes 10 hole plugs

while adding essential electrolytes and alkalinity boosters (acid neutralizing)

accurate measurements in nutrient solution

Successful calibration indicator is displayed on screen for 30 days to indicate when re-calibration is required

use the KCl solution to store the pH pen/probe after use and hydrate monthly

Titan Controls CO2 Regulator (10/Cs) The black hole punch includesCompatible with Titan Controls CO2 Controllers or other 120 Volt controllers and timers. Precision accuracy flow meter0. 5 to 15 SCF hour. Features heavy duty solenoid valve. High quality oilless pressure gauge. Includes two plastic tank washers and 12 ft of CO2 dispensing line. Brass construction for long lasting dependability and durability. 1 Amp 120 V 60 Hz.