Bulb longevity: power compact, NO, VHO.

[Bob I]

That is a fair question , but can only partly be answered. For the 96W it is immaterial , it lost half of its original output in six months (I don't remember the numbers).

I have just measued an almost new 65W CSL Smartlamp. It measures a little under 5000 LUX.

Brand new 10000/6700K Sunpaq measures just over 5000 LUX

I have no new T5, or GE 9325 tubes, so I cannot measure them.

I did just add the old Actinic Coralife to the old 10000K, and only got 3000 LUX

I then added the old GE to the old Coralife, and got more than 4000 LUX

I can tell you that visually the other 65W tubes looked great when new, but are very dull after one year