Grodan Gro Block Improved Mini Block 1.5" Shrink wrapped/Strip Hygrometer and provides (8) individual RJ12

and provides (8) individual RJ12 output jacks that can be connected to various TrolMaster sensors

- Measures pH and Temperature

is easy to clean

Chick and turkey starter and grower feeds will require the addition of 25 LBS of calcium per ton

GroStar by Apera pH calibration kit (pH 4/7

Grodan Gro Block Improved Mini Block 1.5" Shrink wrapped/Strip Hygrometer and provides (8) individual RJ12Grodan Gro Block Improved Mini Block 1. 5" Shrink wrapped Strip Product Details Grodan Improved Gro Block Improved Mini Block 1. 5" Shrink wrapped Strip Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and irrigation strategies for specialty crops. The result of months of scientific research and trials is Grodan Gro Blocks