Hanna Cal Check Solution, case of 25 meters-&-solutions Or drill holes down by

Or drill holes down by a plant when it is already established

They can be easily mixed with other media for increased aeration and added moisture-holding capabilities

PRO-MIX HP-CC MYCORRHIZAE™ is a lightweight

Comes with plastic stopper to secure the string at the desired length

Handle for easy carrying

Hanna Cal Check Solution, case of 25 meters-&-solutions Or drill holes down byThese 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.