Plants are looking good and the temps are down,
I'm curious why you went from Cfl's to HPS and why not make the jump to L.E.D?
That's a very good question.
I did consider LED's. To me there seemed to be too much variation concerning them.
:LED power ranges from 1w, 2w, 3w and 5w
:Reflector angles from No reflector to 45, 70, 90, 120, 160 degrees
:Bands of 3, 5, 6, 11 or 12 band LEDs from flowering to full spectrum.
-Also I read that some growers were still having heat issues using LED's.
-And there seemed to be a lot of variation to light distance from the canopy.
I asked myself what LED light is worth my money? Can I buy a cheap one? or do I need to get an expensive one to match HID lighting. If I buy an expensive one, will it produce any better than a cheap inexpensive LED light?
I concluded that LED was more in the experimental phase and that there was no "standard" when it came to LED lighting.
This is from an article that connected with me:
Yields & Potency
When it comes to improving your yields, the most efficient grow light is an HPS. When I say "efficient," I mean the amount of usable light produced for the amount of electricity needed. Because HPS lights are so efficient, using an HPS light during your cannabis flowering/budding phase is the fastest way to improve your yields.
When it comes to improving your potency, LED grow lights seem to help the plant produce more trichomes and bring out the natural odor of the plant, and many growers believe the overall quality and potency of buds is increased when using LED lights during the flowering stage.
A combination of HPS and LEDs seems to provide some of the best benefits of both - big yields plus high quality and potency. This may be because a combination of HPS plus LEDs more closely mimics the autumn sunlight that cannabis plants are exposed to in the wild.
My decision may be slightly biased also. When I started growing with CFL's everyone was saying HID was the "golden standard".
In conclusion, I decided to go with HID because it is a very well known way of growing. But, I did purchase a supplemental LED light to increase the red spectrum.