I'm wondering if anyone has experienced bad reactions from their corals from adding biodiversity to the tank be it from live rock or sand from sellers like ipsf, garf's grunge, gulfliverock, etc. I had a dino outbreak in my 20G and added the live sand and wonder mud from IPSF to bolster the microbiome. My expensive torches and SPS all started to react in a negative way the next couple of days. I thought I'd wait it out, but my euphyllia started showing tissue recession and expelling lots of zooxanthellae. Even my acans were all closed up. I ultimately decided to emergency move them back to the frag tank and they seem to be recovering.