I did a water change on monday and I used water I mixed from a few weeks ago and it turned out that it had a very low kh. I immediatly noticed and ive been doing 10% water changes to boost it daily since then and most things have gone back to normal and have been looking good other than the acan in the photo.I havent dipped it or done anything with it other then fed it reef roids to try and help it puff back up. I dont want to mess with it as its my favorite piece I have and I dont want to kill it. I was wondering if anyone had any tips on if I should dip it,movie it,feed it pellets or mysis, or just let it be. (photo on left is from a few weeks ago and the acan in question is the one in the bottom left of that photo)