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Discussion Starter · #1 ·
Is this info on bulbs life span correct?
Standard----- 6--18 months
T5------------- 6---8 months (for colors start dissipating)
T5 Ho------- 16--24 months
Compact---- 12--28 months

If this is not correct please add your info.




 

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I don't think there is any usable test data showing the effect of time on PAR for any of those bulbs. I can recall one post, where 55 watt PC bulbs were noted to have more than a year of life before the PAR dropped significantly. And, T5HO, because of the ballast which treats the bulbs gently, usually lasts longer than PC.
 

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Discussion Starter · #4 · (Edited)
I found a spec sheet that gave T8 life of 20000hrs but on the box of T8 by Zoo Med I see life is 10000hrs. So it seems the brand makes a difference.

Unfortunately found someone whom had a sunpaq PC, which is what I have, said that 9 months is the max. For colors dissipated and algae started growing in his tank.

I wrote Current USA and got the same info that the bulb only last for 9months.
 
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