jroath87
New Member
hey guys, i have a bunch of corals in my 75g reef tank, i just did a 20% water change nothing out of the ordinary. normally after water changes the corals will curl up for a few hours and then return to normal. however this time the corals have been curled up for 2 days. one started to uncurl and has a huge legion on it about 1 inch in diameter. its pretty deep and you can see what appears to be its skeleton. any ideas on this sudden decline in my corals health. water quality and ph are all normal