Thank you..Which tank u r planning to add? I may end up getting another one and put it on my S-1000 if I didn't find a buyer by next week.Ah! Got it! I have the 48” one now, my upgrade plan was going to add the 36” with the 48” on a 84” tank. But still in planning and things could change along the way, as the thought of changing 16 bulbs yearly is not very feasible. GLWS!