I did not look into this before buying my jbj power compact. I have 2 65w 10000k, and 2 65w atc. blue. If I had the same in a VHO what would be the difference? elec. bill, changing bulbs, just the size? Please help I'm a little confused.
There's just a subtle difference that must be seen to appreciate. Both are good at moderate reef lighting, PC is more intense.