Cfl or t-8 lights

[Av8tor1]

The "lumen maintenance" of T5's and T8's is about 90% over their lifetime.
Some of my research links are dated, but if anything the data will have improved over the years...

http://bluegrasscarnivores.com/research1a/CFL.pdf
http://bluegrasscarnivores.com/research1a/T8.pdf
http://bluegrasscarnivores.com/research1a/T5.pdf

My bulbs are at least four years old, they were two year old when this pic was taken:

The N. macrophylla that just won POTM, is grown under 2 yr old T8's

But, like everything else in this hobby.... ymmv
Bulb life is highly dependent on ballast design and operational conditions.
.

 

[PsychoSarah]

Wow, that is quite the population of heliamphora

 

[dionae]

OMG!!! Those helis are beautiful!!!

 

[bluemax]

The "lumen maintenance" of T5's and T8's is about 90% over their lifetime.
Some of my research links are dated, but if anything the data will have improved over the years...

http://bluegrasscarnivores.com/research1a/CFL.pdf
http://bluegrasscarnivores.com/research1a/T8.pdf
http://bluegrasscarnivores.com/research1a/T5.pdf

My bulbs are at least four years old, they were two year old when this pic was taken:

The N. macrophylla that just won POTM, is grown under 2 yr old T8's

But, like everything else in this hobby.... ymmv
Bulb life is highly dependent on ballast design and operational conditions.
.

Those are very useful and interesting pdfs. Thanks!