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
I've tried most of the others and find you guys to have the best prices and by far the best, most personal service I've seen. I'll continue to use you for all of my aquarium needs.