Ask a Question forum→Grow light blinking on and off

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Name: Audrey
Pennsylvania (Zone 5b)
Photo Contest Winner 2020
Apr 28, 2018 3:26 PM CST
I use fluorescent shop lights as grow lights, and one of the new ones suddenly started blinking on and off today. Not just flickering, actually blinking on and off. I've gotten pretty frustrated with the Walmart shop lights before because the holes that you put the hooks in are too close to the wires, but this one did seem to be working okay right after I hung it.

Our power went off briefly once today. But, since all the older shop lights came back on, I don't understand why this one didn't do so as well. Anybody have any ideas? I've already tried unplugging and replugging it, monkeying with the bulbs, etc. All of the other lights plugged into the same strip still are working, so it isn't the strip or timer that is at fault.
Name: Big Bill
Livonia, Michigan (Zone 6a)
American Orchid Society Judge
Region: United States of America Critters Allowed Growing under artificial light Echinacea Hostas Region: Michigan
Butterflies Lover of wildlife (Raccoon badge) Orchids Cat Lover Birds Bee Lover
Apr 28, 2018 5:42 PM CST
Either needs new bulbs, try by removing both and reinsert OR it may need a new ballast.
Rodney Wilcox Jones, my idol!
Businessman, Orchid grower, hybridizer, lived to 107!
Name: Carol
Santa Ana, ca
Sunset zone 22, USDA zone 10 A.
Charter ATP Member Bookworm Hummingbirder Lover of wildlife (Black bear badge) Orchids Region: California
Plant Identifier
Apr 28, 2018 7:02 PM CST
I have been told to replace both bulbs when one in a double fixture goes out.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Apr 28, 2018 7:12 PM CST
Where the bulbs also new? Or just the ballast? If the bulbs are also new, is the ballast hot when it blinks off?
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

President: Orchid Society of Northern Nevada
Name: Audrey
Pennsylvania (Zone 5b)
Photo Contest Winner 2020
Apr 28, 2018 8:59 PM CST
Thanks for the comments. The bulbs were new too, so they can't be the problem. (When I say "new," I mean that the light has been working for at least a month or so since I bought it.) The light eventually stopped blinking and isn't working at all now, but didn't feel hot when I touched it at the time. I'll probably have to return it, provided that I can find the receipt. It could at least have waited for a couple weeks or so until the weather would be warm enough for me to move all the plants outdoors!
Name: Will Creed
Prof. plant consultant & educator
Apr 29, 2018 11:15 AM CST
Tough break. Sure seems like damaged goods that they should make good on.
Will Creed
Horticultural Help, NYC
Contact me directly at [email protected]
I now have a book available on indoor plant care

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