Hey Mike,
Cool, so you went ahead and got it! Looks like a nice one! Lifereef makes high quality stuff! If you do see your PH droping and find you need a second chamber George could probably modify it easily for you. I was at his house today and he is building kalk reactors now too which looked very nice. I just fairly recently went through getting my CA reactor dialed in so if you want any help give me a shout! Take care!
Mark