Hi Iwan,
Interesting to see that you are using an ATI BM...was looking at the BM 250 today as I'm looking for a skimmer on my 210G. I've heard that there are problems with adjusting water level and air intake on this skimmer, that a lot of skimmate builds up on the riser column because of that. Have you encountered any such problems?
Love the new aquarium really nice....again coloration is spectacular. Whereabout in the Red Sea did you dive?