The ground plane kit is a mylar tape which is applied to the back of each bulb. From there, each bulb is grounded to a ground wire. This provides smooth dimming by allowing current to pass through the entire bulb when low voltage is applied.
Our Price: $34.90
Has all the features of the L-2 plus pH, ORP, and temperature monitoring as well as pH and temperature controlling. Controls items with X-10 module. Includes pH probe, ORP probe, temp probe, X-10 interface, 2 satellites, & ground probe kit.
Our Price: $599.90