The LaCl actually didn’t have any long lasting affects at all, sadly I lost several wrasse and a couple of angels, in the main it cleared quickly and a few water changes sorted everything.Let everyone know how it went - or people can predict how it went - I predict your fish had problems, your Coral retracted - but if you got the Lanthanum out enough - and tested your PO4 adequately - you did ok
Then life got in the way mainly, covid and stuff, I really Cut back the amount of time I was spending online and coupled with a change in priorities for me and a few health issues. I now devote far less time and stress to my tank and it’s bumbling along ok really.