Grodan Stonewool A-OK Starter Plugs Options:Grodan PRO A-OK Starter Plugs 1.5 in Unwrapped (30/Cs) The Bluelab Combo Meter is

The Bluelab Combo Meter is a conductivity

Radiant DE Reflector Unit

The most frequently found silicate clays are aluminum silicate

The Pargro product line averages 14% drier than Cultilene Comfort Blocks™

Installation is simple and the system is easy to expand upon

Grodan Stonewool A-OK Starter Plugs Options:Grodan PRO A-OK Starter Plugs 1.5 in Unwrapped (30/Cs) The Bluelab Combo Meter isA OK Starter Plugs for starting seeds and rooting of cuttings prior to plugging into the larger Gro Blocks. A OK Starter Plugs come labeled with instructions in a shrink wrapped sheet that fits a standard 10 x 20 tray (flat). Note: Item #713020 is supplied without shrink wrap.