In all this time, I've never run halide. I couldn't on this display as it is in a highly visible spot and the aesthetic police would object. I have another basement frag system that is "my" space, but would need to upgrade ventilation. I already run a couple fans off my APEX that barely keep up.I like it and I like your tank. I also like the footprint of the fixtures and the fact that you’re comparing them (even if it’s only PAR) to a sunpower. I still think ATI fixtures are the gold standard in terms of T5 and a serious rival to the highly coveted halide (although I still love the Phoenix 14k).