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The T12 HD 'cheapie' Shop Light Fixtures No Longer Work with T8?

Posted by bencjedi 6 - Central Kentucky (My Page) on
Wed, Mar 20, 13 at 16:12

About 4 years ago I purchased the 48" least-expensive shop light fixtures at Home Depot. They came in a trapezoidal-shaped box. These fixtures were for T12 bulbs however T8s worked in them just fine. I decided to add more fixtures for another shelf of plants yesterday, so I picked up two more of the same fixtures at HD only to find that the T8 bulbs won't work with these newer-generation fixtures.The body of the fixture is identical to the ones I bought 4 years ago. The T8 bulbs work for about a minute when put in fresh and then they flicker like crazy and no turning of the bulbs seems to stabilize the lighting. It seems like the manufacturer changed the electronics inside the fixtures. :(

I liked these fixtures because the old-school server console rack I use for a shelving system is perfectly wide enough to accommodate 4 of these shop light fixtures side by side. The wideness footprint of these fixtures is perfect. I bought a fixture at Walmart last year that wasted too much space between each bulb. I hate to buy a different kind of bulb, so I guess I am shopping for new fixtures that accept T8 that have the same footprint. Any recommendations or should I just buy T12 bulbs?


Follow-Up Postings:

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RE: The T12 HD 'cheapie' Shop Light Fixtures No Longer Work with

Depending on the bulb, there is often little difference between T8 and T12 bulbs both in lumens (what humans see) and PUR (more important, what plants want). If in your situation I would buy daylight/aquarium or full spectrum T12's.


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RE: The T12 HD 'cheapie' Shop Light Fixtures No Longer Work with

It might be a defective fixture. some T12 light fixtures will use T12/T8, others only T12. You can still buy the T12 for now, I've heard that they will be discontinued in near future. All my lights are now T8. When I buy them, I mark whether the box states T12 or T12/8 or T8, making it easier to know whether the different bulb will work.

I've noticed that alot of store are discounting the T12 only fixtures lately.


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RE: The T12 HD 'cheapie' Shop Light Fixtures No Longer Work with

go onto ebay and get used t8 fluorescent ballast. Read about how to overdrive fluorescent fixtures, and turn your cheap shoplight into a lighting powerhouse, for very little money. a used appropriate ballast is about $10 - buy the ballast that is designed for 4 lamps, instant start, and use two leads for one lamp and 2 leads for the other lamp- your 32w t8 will be running at about 50watts and will put out the increased amount of light that will make your plants really happy - paul m. (that's what i do - anyway)


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RE: The T12 HD 'cheapie' Shop Light Fixtures No Longer Work with

  • Posted by bencjedi 6 - Central Kentucky (My Page) on
    Sun, May 5, 13 at 22:47

I ended up taking the fixtures back to Home Depot and instead settled on the Walmart ones that said T-8 on the box. I'd rather stay in the T8 world, but changing ballasts sounds interesting, so I should look into that for next year. I don't really need to accelerate growth and development though that would be a good catch-up if I get too lazy seeding for my late April\early May batches of tomato plants I sell locally.


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RE: The T12 HD 'cheapie' Shop Light Fixtures No Longer Work with

I use CFL's in closed boxes 4 ft by 4 ft with the Heights to plant needs. They work better than my tube lights by a long shot. Because the ballast is with the bulb there is no trouble shooting, just change the CFL and away you go.
SEE PICTURES

1:   4 X 4 X 2 FT HOT-BOX WITH PEPPERS UNDER COMP. FLOUR. LIGHTS---ABOVE THIS;  PLANTS NEEDING ROOT HEAT ARE GROWN--TEMPS HERE RUN ABOUT 90 DEG AND SEEDS GERMINATE FAST-- CITRUS ROOTS GROW WELL photo IMG_3597_1_zps2877c51c.jpg
grow box under construction  2-20-13 photo IMG_3610_1_zps6d036d85.jpg
peppers in new grow box 2-21-13 photo IMG_3614_1_zps35a54349.jpg
new taller box 3.5 ft tall photo IMG_3615_1_zpse9a31009.jpg
4)---16 brocoli plant in 1 gal. cans under 8 lights of 650 lumens, Above, Meiwa kumquat tree's roots are warmed by lights to 85 deg. photo IMG_3691_zpsd744827b.jpg
5)---meiwa kumquat tree's roots getting warmth from lights over the Broccoli plants photo IMG_3924_zpsd32ec2cd.jpg
HARDY CHICAGO FIG MWITH BUCKET GROW SYSTEM DISASSEMBLE FOR VEIWING photo IMG_3355_zpsb32bf108.jpg
KUMQUAT GROWER COMPONENTS--POTTED TREE TO LEFT--ROOT VACUUM CHAMBER TO RIGHT USES VACUUM CLEANER--- -  TREE GET PLACED IN STEEL CAN AND VACUUM HOSE GOES IN HOLE IN LOWER CAN photo IMG_3594_1_zps8cf4e968.jpg

This is where my starts are placed after ,growing in my CFL powered bucket and box light systems
CLICK ON THE LINK BELOW

Here is a link that might be useful: https://plus.google.com/photos/111099372377958308731/albums/5864651368775846321?banner=pwa&authkey=CI763rvAj8eLAg


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RE: The T12 HD 'cheapie' Shop Light Fixtures No Longer Work with

  • Posted by bencjedi 6 - Central Kentucky (My Page) on
    Sat, May 11, 13 at 22:12

That's fantastic poncirusguy!

Thanks for sharing! Simple and very effective!

Here's my current setup. I use an old server console rack with shop lights hung on the shelves. I used a giant sheet of reflective Mylar on the backside to keep the light inside the giant 'box'

From FacebookShared

From FacebookShared

From FacebookShared


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RE: The T12 HD 'cheapie' Shop Light Fixtures No Longer Work with

Hi bencjedi
You have quite a setup yourself. storage containers with tomatoes popping through holes in the lids. I saw what looked like cat litter buckets with pepper plants. I have 5 gallon buckets with peppers and eggplants. I am trying some thing different this year. Lots of frost covers and cold frames. You appear to have completed what I am in the early stages of. Thanks for the pics.

My sites are public so feel free to look beyond the direct links
eggplants in  stack-O-3  one gallon food tins photo IMG_4342_zps734e2396.jpg
Skyscraper eggplant starts
peppers in stack O three  1 gallon food tins photo IMG_4343_zpsd23fca1b.jpg
Skyscraper pepper plants from over seas 200 years back
peppers in stack O three screwed down to railing photo IMG_4344_zps5193a140.jpgeppers on the rail.
south side side of house photo IMG_4352_zps8defb2c9.jpg
Pear, 2 apples, 2 sweet cherries, 3 grapes, 2 gooseberry, 3 rhubarb, 3 kiwis, 3 sweet lee tangerine seedlings
north side main roof photo IMG_4354_zps2ad86cd9.jpg
Spinach field with brussel sprout front left
broccoli on main roof 16 plants photo IMG_4351_zpsc7a3535a.jpg
Broccoli 16 plants
east side of house photo IMG_4353_zps61edd14a.jpg
2 pear trees maxine to left, moon glow to right
looking down the lader to future greenhouse photo IMG_4357_zpsaadafeb5.jpg
the climb down out of the garden

Click on the link below to see more

Here is a link that might be useful: https://plus.google.com/photos/111099372377958308731/albums/5864651368775846321?banner=pwa&authkey=CI763rvAj8eLAg


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