You need to play with the skimmer a little bit until you find the the right water level and bubble production. With the aptasia you need to get rid of it as soon as possible before it spreads too much, that's an awful pest that if not under control, it can overrun your tank pretty much. The white things could be calcium deposits?
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240 Gals. Mixed reef. Finally I got my BIG tank!! thanks to the wife of course...lol
Man get to know yourself and you will get to know the Universe and the Gods!!
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