DIYbanter - View Single Post - How can they be so cheap! (CF light bulbs)

wrote:
I assume these are the same bulbs as were offered a few months back; if
so be aware that, based on personal experience, after a few months use
the bulbs start taking longer & longer to reach full brightness. I
fitted half a dozen at home when the offer last came round, the two
most used ones are taking much longer to brighten now. The worst cas
eis the bulb in the lounge, which has been switched on for maybe 10
hours per day during the winter months, but only switched on and off a
couple of times per day.

How long is 'much longer? I may have a use for them at school if the
life of them is good enough.

Dave