Hanna Cal Check Solution, case of 25 bloom The Mega covers a 5

The Mega covers a 5 ft x 5 ft flower footprint and a 7 ft x 7 ft veg footprint

Perfect for holding one 2' x 2' tray

CULTURED UNDER PROPRIETY CONDITIONS TO ENSURE QUALITY AND QUANTITY

The ionization tubes should be inspected and replaced periodically per the manufacturer's recommended schedule

Hanna Cal Check Solution, case of 25 bloom The Mega covers a 5These sachets are for use with the Hanna HI9813 6 GroChek portable pH TDS EC Temp meter, which utilizes the Cal Check Solution to determine whether the probe is in need of cleaning or replacement. The sachets should only be used once, then discarded, in order to avoid contamination and improper readings.