I have had losses after starting to use the TMP salt ! I couldn’t figure out what was happening as parameters checked good, I thought that it was a bacterial issue, so I dosed Cipro to the tank in relation to the AquaBiomics post. TN seemed to stop and corals started looking good again, until I did another WC, then the same thing started happening. Then I started reading all the posts about the TMP salt issues, smacking my head ! I use to use the HW and liked it a lot, but the last batch that I used didn’t mix clear as it always did and that’s when I switched over , wish I never did. Now I am at the deciding what salt to use again ! Yesterday I put activated carbon in the tank before my friend came over to take the monthly picture (because I am a terrible photographer, Lol) and the corals seemed to have responded good to it, so there was definitely something in water that they didn’t like. Hope that this helps anyone having issues and Happy Reefing.I got lucky last year when tropic marine was out of stock. I switched to HW Reefer. So glad I did seeing all the posts like this. Glad you could save it. Hopefully you didn’t have any losses.