Thanks. I think I still have more coral from Indonesia than I want to, and less Fuji and Austria than I hope, still working on it
With dense hard coral and most are grow craze, I think just water hangs won't catch up their comsume. Some element are just less than you want in most of salt if you want some specific results. For example, Iodian for blue and Sr for grow. Just my thought.
I had thought about the other side, but then I found with some adjust on my pump direction, the bounce back flow is ok, maybe something to do with my rock placement, which there is a big hole to let water through, and the condition of coral on that side stand that point. However, if there are good way to put two wave maker there, I may give it a try.