Clean your tank and change all water to save it, match temp and salinity. Next time, don’t delay when it’s half a brute of water to solve the issue, a rip cleaning solves all the issues it could be. The old rumors that large water changes are harmful has actually killed more reefs than it helped, via incorrect info. We could have saved much more corals if told about disassembly cleaning twenty years ago. The only tanks that can’t disassembly clean are huge tanks, they must wait, hesitate, and work through the water and hope no corals bleached. In our rip clean threads, the annual updates look darn sharp and they all presented with clouding at the start.
nanos do not have to identify the invasion, that’s hesitation. Act before you ID is the new way, to save corals. Thankfully, Jon M used his giant reef to run our most recent rip cleaning, twice in one month, and there was nothing wrong with it. He ripped simply to measure results and remove detritus from the sandbed just to try that mode a while. His tank is #2301 that show in pattern an ideal outcome
the other big water change / I lost something threads are skipping a huge portion of how we prep tanks for big water changes, so their loss isn’t a surprise it’s expected. Following the rules, all rip cleans are successful.