Grodan PRO A-OK Starter Plugs 1.5 in Unwrapped Inner Diameter (ID) Grow Trays our reflective white tubing is

our reflective white tubing is completely opaque to prevent algae growth

Package Includes: 1 - Heat Mat (48"x 20" Watt: 100W) / 1 - Digital Thermostat (120 Volts / 8 Amps Max /60 HZ)

silicon dioxide derived from diatomite and yucca extract

This fabric provides great support

For every position the efficiency is better than 90%

Grodan PRO A-OK Starter Plugs 1.5 in Unwrapped Inner Diameter (ID) Grow Trays our reflective white tubing 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.