I think the highway department liked them because they seemed to last forever. They predate fluorescent don't they? I did actually research one type at some point and I want to say they should go for over 100,000 hours.
Kind of the laser disc of lights.
Didn't even know they still made them! Maybe NOS?Quick google search turned up this vintage gem on E bay. I about snorted coffee out my nose when I saw the price.
400 watt induction GROW light 120-277v FAST FREE SHIPPING GREAT CONDITION | eBay
1000 watt ballast. · Instant start, flicker-free (hot or cold starts). Grow light. · High generator power factor (PF) up to 0.95 / 95% efficiency. · High color rendering index (CRI) of 85+.www.ebay.com
www.1-hydroponics.co.uk
You ever use them? Curious if the light penetration was better because of less heat output?
Not personally, only saw one in person once at the hydro store.
