Need to check how much a device is using? The “Kill-A-Watt” sits between the wall and any device with a plug and tells you how much electricity is being used.
You can grow ounces of high-quality bud with a high-performance, low-wattage LED like one of these. They both run on 100w, which will on average cost you less than $30 in electricity over the course of a grow.
