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

and 0 to 400 mg/L (ppm) for TDS

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

Use in combination with high quality base fertilizers like Roots Organics Buddha Grow and Buddha Bloom

Resolution of 1 S/cm

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.