T5: what's the difference between NO and HO?

[artarmon42]

What is the difference between NO and HO?
Is it just the ballast or some other component or quality issue?

Here's the deal...
HO lamps are a minimum of 24".
NO lamps are available in shorter distances.
Is it possible to over drive a (shorter) NO bulb so that I can get HO quality light?

Specifically, I'm wondering whether anything can be done to "imrpove" these 11" 10W T5-NO units.

[tnguy86]

there's no way to overdrive those lamps.......high output lamps simply put out more light....