I am a customer of Oceans Blend and I heard about this thread. I have used OB additives for the past 2 years on my 125 gal reef I have had excellent SPS and clam growth. As far as I know he makes no claims on his products that are not true, and there are hundreds of users of OB here in the U.S. that can testify to the efficacy of his products. I can provide tank pics of mine and others if there are doubters.
P.S. If you are having difficulty keeping your calcium level up I suggest a refresher course in cal/alk balance:
Advanced Aquarist - Solving Ca & Alk problems
P.P.S. Double deIonization is simply the use of 2 deIonization filters in one filtration unit - the second is used as a 'backup' and it allows the first DI cartridge to exhaust completely without compromising water quality and thereby gives more life to the first cartridge. It's not rocket science, guys.
