IMO) This concern over Alum. seems to be inconclusive and that Aluminum has not been determined conclusively to have a definitive affect on soft Corals etc. Here's another question? At what point is Alum. effecting Corals? Most people including my self don't spend $$$$ on a Triton test. If Alum. Was a real Issue than why isn't it common place to have a Test Kit for it? Also Is there a way to remove Alum. from your tank once you discover it? Is it worth for proper testing to be done here. I for one will Not spend $$$$ on a Triton Test, not to say it should not be done. Just saying most hobbyist will not either. For now I will follow along.