CCFL 253nm Technology

[oreo54]

Seems LED still a ways out but do these CCFL show any promise as advertised because I'm getting confused as to this specific bulb technology being deployed by Fluval having said 100% UV-C or not. Due to how compact they are would make plumbing much easier and supposedly longer useful life according to Fluval. Haven't seen them provide any proof of any of their claims. Not that they haven't. Just not seen by me.

100% or 90% makes little difference.
To get 100% you just need to filter out the 10% "other" light .

I haven't actually seen any side by side spectral comparison between cold cathode and normal fluorescent UV-C bulbs showing the spectrum over the range of Interest in order to make the sort of comparison to say that one is far more efficient than the other.
Maybe @oreo54 has seen something that shows the goods.

The main point of the cold cathode is just to extend the bulbs lifespan.
Doubt if efficiency has much to do with things though they do say they are more efficient... Meaning more photons/watt so one can use less watts..

And dimmabilty.
Thought this was funny ..

AMERICA'S LIGHT BULB COMPANY: PREMIUM QUALITY LEDs

Uncover the efficiency and adaptability of cold cathode fluorescent lamps (CCFLs), offering long-lasting, energy-saving light for diverse uses.

goodbulb.com