Grodan Gro Block Improved Mini Block 2" Shrink wrapped/Strip Growing Media you can test both the

you can test both the pH of soil directly or after preparation of a diluted sample

lower amp draw

NPK: 5-0-0

The kit also comes with the Jump Start Windowsill Heat Mat

Grodan Gro Block Improved Mini Block 2" Shrink wrapped/Strip Growing Media you can test both theGrodan ImprovedGro Block Improved Mini Block 2" Shrink wrapped StripGrodan 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 Improved with Grodans Advanced Wetting Agent. These leading edge blocks have the optimal