hey everyone. i'm about to buy a new fixture for my 75g 48x18x19from the substrate to rim. i was wondering if anyone else was using these and if a 50/50 and an actinic blue would run LPS and a couple easy to keep SPS. i spoke with TCUguy and he gave me some interesting input and some stuff to think about but was also wondering if anyone else was running these as their only lighting. let me know what u guys think. My tank would be open top and i could hang them as close to the surface as needed. if this doesnt seem like a good idea i'm just gunna go with a 6bulb T5. thx!