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Old February 1, 2020   #73
clkeiper's Avatar
Join Date: Nov 2011
Location: ohio
Posts: 4,353

actually this is exactly what I have been wondering while trying to replace bulbs in my grow light system. I inherited one of those 3 shelf 4' fixture systems a few years ago and the lights and ballasts are dying. so, I bought a couple LED grow lights at Menards and bypassed the ballast on the one fixture. then someone mentioned Walmart has the bulbs so I went and got a few but they are not bypass bulbs. sheesh! the question in my mind though was should I leave a white light and an LED on the same shelf and can I insert one of each bulb in the same fixture since I don't have to bypass the ballast for the LED....each shelf is two light fixture with two bulbs each.
carolyn k
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