Well I'm definitely feeling old reading this. My tank has been up for 15 years this month and I'm still using the same MH fixtures and ballasts I started with. I did switch out VHO's for LED's a few years ago. I have done some cost and energy usage comparisons several times over the years and I never found that LED's really used less energy if you get the number of units to equal the light output of the halides. Plus, with LEDs my heaters will need to run more. I'm in the Northeast and find that heaters run 10 months of the year, obviously more frequently in winter. Heck, on those really hot spring or fall days I'm running a chiller during the day and heaters in the middle of the night if I want to maintain the temp within a degree or two. I finally decided to let the temperature swing 3-4 degrees to avoid that.
I think I'll be with MH until I can't get them any more.
Mickey
I think I'll be with MH until I can't get them any more.
Mickey