Well the search is down but, I'll try in short tell ya....I have used Reef Crystals for about 13 years with no problums. The high rate of dyeing corals. I bought a hugh brain from Reefermadness.com it was about 6 inchs absolutly beautiful, we needless to say it melted away in a matter of 4 days to the point that it went from bright green to skeleton. I had a few other corals that died, a pink yuma, a colony of other yumas,a clam, a black cap basslet I got on my honeymoon. I had tested the water and I think the tests were bad in the end cause they were showing proper ranges. So I was to the point I wanted to dump the whole tank and give up, I had lost about $300 in corals in the period of 3 weeks. I had enough for 1 last water change of the bag of Reef Crystals. I took some water to LFS I go to and we tri tested the water with RO/DI, and with distilled(I was using distilled for changes) well needless to say the ph was around 10-12, the kh was of the charts of every test, dkh was also off the charts. Ca was correct all of this was at a sp gravity 1.025. So we made three batchs and tested all of them again and they all came out the same. So my tests were bad and the salt was buffering the water to the point that that it was beyond normal ranges and killing any new coral put in the tank, while the old in habitants except for the Black cap slowly began to get used to it. Well needless to say Oceanic help come back from that, but the algea bloom I am slowly killing of was not there before the change and the diatoms wern't there either. Ohh well that reefing live and learn....so now I'm useing the free reef crystals that the rep shipped me. I thought about trying Tropic marin...maybe when the reef crystals are gone.