SnowManSnow;776235 wrote: sort of.
when you first get into it it can be a little confusing.
Double ended lamps are = HQI
Single ended lamps are = mogul
The higher the K rating is the bluer a lamp appears to the human eye.
a 6,500K lamp will look yellow while a 20k lamp will look bluer
As far as HQI lamps go ... there aren't many good 20k lamps out there.
I ran a fixture similar to yours for a while and REALLY liked the Pheonix 14k. I tried several brands over the years but that one was the one I liked

It is a nice balance of white and blue (not yellow to me at all).
Also check youtube / google images for lamp colors
just my opinion of the situation

good luck