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fill level indicator
No more run-off
Can-Lite Mini 6" x 16" 420 CFM
or hydroponic systems
Supports higher yields
Grodan MacroPlugs Select Rockwool Type:MacroPlug - Case of 2,000 fill level indicatorGrodan MacroPlugs MacroPlugs are round, 1. 5 in. with a slit that allows easy insertion of a cutting. These round plugs fit perfectly into our Gro Blocks . For best results with these Macroplugs always insert them in the Grodan Gro Smart tray . The individual cells will make sure that the plugs stay closed around the stem of your cutting. What is Rockwool? Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy like fibers and then
