Grow Plug, 1.5" x 1.5", case of 1500 environmental-controllers while its patented double-wall design

while its patented double-wall design makes it the coolest running fixture on the market

• Works with any standard 110V light fixtures

sea kelp aids in the absorption of nutrients from the soil

• Light cycle extension to induce flowering of long-day plants

Grow Plug, 1.5" x 1.5", case of 1500 environmental-controllers while its patented double-wall designMade of naturally composted materials, it contains natural beneficial fungi and can be inoculated with other biological controls. It is an optimally aerated medium that naturally maintains the proper air water ratio to promote healthy growth. Fits Rapid Rooter tray cells and Hydrofarm cut kit trays.