Ya, that 40 has some kick to it for sure. I actually left the 10 where it is and put the 40 opposite. I moved everything around like I said, but as soon as I turned the 40 on, my bubble completely retracted, hasn't done in quite a while. I might still have to move him, he's open, but not like he was, I couldn't see any fins before and now I can. Oh and the Koralia, its the Evolution 750 gph. When I was at the store last night comparing the Koralia 1 & 7 (all they had), there was a huge difference in the water flow to the 750, which was why I decided to get the 40. So I left it pointing down along the back of the tank, the skimmer is not quite in the corner of the tank and it does not look like a lot of flow in behind it (will use the string test), once I move the skimmer might place it on the other side of the tank along the back. I think it should be ok in there?? The 10 and 40 are placed closer to the top and my water is churning - finally got that really good tinkle lighting in the tank! The 40 is not cranked just for the break in period, don't think it needs to right up full, but probably halfway? The 10 is still on full. Last night my brain coral went beserk with the extra flow. Usually couldn't see his mouth when he was open, but he was spread out so big that his lips were puckering - think he was happy.
I'm not overly excited about spending all this moola on the equipment (boring), but I want to be able to add stuff to the tank and not go through this again, so better to do it right than panic later. And no algae on the glass 3 days straight! Have been turning the lights back on in the evenings so I (oops, we) can enjoy it after work.