Some changes in the 50 too. I bought one of these filters a few months ago for the 29g (the one rated for 75 gallons) and really like it. I don't get any stuff on the water surface any more in that tank, so I am switching the 50 over to two of these and removing the RemoraPro, Aquaclear HOB, and internal pump. I'm hoping to get the same results! (Note, the filter for the 75 gallon has two chambers on it.)
I also have new lights for the 50. I'll be changing the Current 150w from 14k to 20k. The 14k bulbs still have 5-6 months left on them, but I'm going to switch anyway. Hopefully, I don't break the old bulbs getting them out. I broke every one of the bulbs that came off the 125 (don't know if they were poorly made, if I did it wrong or what).
BOB is still having fun in his tank. He got a bath and is now picking up a few rays to keep his golden glow!