Jim, ya i m guessing that as well. Its pretty weak and defendless against my little yellow.
sometimes i have to intervent to get the yellowtang off its tail... >.<" Its true, copperband didnt get to eat any foreign food i threw in, even cypofreeze...
Siang, probably the spike in the PO4 contributed, i have yet to test my water, but everything seems to be in good condition. Hopefully, nothing happens...