Defdac, that range of light is pretty much ideal(100micromols), but seldom used here in the USA sadly.....they have the more is better attitude, thus have more issues with good CO2 for a given light level.

While that might seem bad, and generally might be argued so, it has helped to understand the CO2 issue much more by pushing things to the limit and finding better management methods to deal with it.


Regards,
Tom Barr