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Old March 2, 2021   #35
Milan HP
Tomatovillian™
 
Join Date: Dec 2017
Location: Ústí nad Labem in the north of the Czech Republic
Posts: 332
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Quote:
Originally Posted by Ozark View Post
We have lots of 4-foot double-bulb flourescent shop lights in and around our home - they're in my wood shop, on the patio, in our recessed kitchen ceiling, and every spring I raise tomato and pepper seedlings under three hanging shop lights, 6 bulbs total, covering an area of 4' x 2'.


I bought a case of 25 LED tube bulbs and I'm replacing all the flourescent bulbs with them. The bulbs I bought are "T8 LED Bulbs, 5000K Daylight, Ballast Bypass Tubes; 14 watt - 1800 lumens - One Sided Direct Wire - 4 Ft." We really like the ones I've installed so far.


I intend to install these in the shop lights I use for seedlings also. Those fixtures are old and I've been putting up with flickering lights, buzzing ballasts, and old bulbs that often burn out. With the LED's I shouldn't have any of those problems.


Possibly 6500K bulbs would have been better than 5000's for seedlings, but I'd like to use the bulbs I bought - after all, I'll be using 6 bulbs for only 8 square feet. Thinking that should work OK, what do you think? Thx.
They sound pretty good to me. Their efficiency is quite high and the drawbacks of ballast luminescent tubes can really be annoying. And I am not speaking about the fact that they lose a lot of their intensity with age (up to 40%). If I understand right, you won't have to replace the fixtures.

From the plants' point of view, it's a good idea to have a look at their color spectrum. Not that fluorescent tubes are optimal in that respect. With 5,000°K, I wonder if the LED bulbs radiate enough energy in the blue wavelengths.

Milan HP
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