wow, glad i found this thread. I have a relatively new system about 8 months old now. I had been using IO Reef Crystals and two months ago switched to Fritz. Since switching I've lost 3 different plating montis that ive had for 6 years, four different monti digi mini colonies, several acro frags, and all of my acans that ive had for around 4 years now are receding. The only things that have changed are the salt and that i had to start using hand lotion over the winter because my hands where cracking and bleeding. My guess was that i did not wash my hands well enough and contaminated the tank. This has me thinking its worth going back to my old salt and giving it a try.