problem/ questions about my corals

jroath87

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
 
reefkprz

reefkprz

Active Member
well, when was the last time you had your hydrometer calibrated? possibly its not reading right anymore. or the temperature was different so your SG reading was off, or.... there are many more things it could be. got any specifics on your water testing?
 
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