Thanks for the info!
I hadn't thought about a change in lighting intensity. My t5 fixture won't support that. Perhaps I should do some more reading.
I have learned that at 15 deg N the day fluctuates between 11-13 hours over the course of the year.
I was running a 12 hour light cycle, but then I cut it back to 10. My SPS are now browning, so I may have to boost it back up again until we get our LED build done (which has dropped off the radar for the time being).
I did consider the seasonal temperature option . . . But I'll avoid that.
