I have a Tek T5 fixture now, 4x 24 watts for some reason though Im thinking its not enough for clams and such since its only about 3.5 watts per gallon. Plus I really want that shimmering effect mh's give and the moonlights. I found you guys through a simple google search i think it was "Sunpod Bowfront". One of the posters has a bowfront with a sunpod with pics I see a shadow so I wanted to post hoping someone could shed some light on the situation.. No pun intended!