It is back to normal. Water parameters are good except for my Ca and kH. i woke up this morning and it was back to normal. My tank is only 3 months old. i have 1 yellow tang, 1 blue banded goby, 1 sebae clown, 1 black and white ocellaris clown, 1 cleaner shrimp, 3 mexican turbo snails, 20 blue legged hermits, 2 sets of xenia's, i trumpet coral, 1 colony of zoos and 1 green ricordia mushroom. Oh yeah, a feather duster that hitch hiked on a rock.