So I need to get more coral dip and having a hard time picking which one. I'm debating between Seachem reef dip, CoralRx, and Two little fishies revive. I have only use Seachem. I feel it works fine but have read about how iodine can stain corals. I haven't personally noticed it, but I'm also not doing anything with sps and lps right now, and it make sense to me that those would be the corals that would get noticeable stains. Anyone out there have a preference of these three or one of their own they know of?