Looks like dead spots starting

[tbrown]

STN isn't always something eating it, just something to check for.

 

[tbrown]

Most of the fish that eat flatworms and other pests are usually not out during the night when nudibranches are awake and doing their thing. I added Springeri damsels and a Halichoeres wrasse to my tank but I don't know if they had any impact. I ended up tearing down the tank and just broke unaffected branches off the surviving Montis. I did catch and kill 5 or 6 Nudibranches and scraped off a few batches of eggs and didn't see anymore after that.

 

[painter1982]