Acros do amazing, but cannot keep Montis?

[Ocean Mang]

I am hoping someone might have some information that might help me to understand why all Montiporas in my system do not do well. Any kind I try to keep, whether digita, caps, or encrusting do not have good polyp extension or eventually get dead spots. I have a great collection of Acropora that are thriving. I also have some great zoanthids (I do get a melted one or two from time to time) Could it be a pest? I have looked close and do not seem to see any. I will test my water params and post, but in the meantime, curious if anyone else has experienced this or could suggest a possible reason. thanks!

 

[James404]

Possibly Montipora Eating Nudibranches? Only thing I can think of...

 

[Western_reefer]

Can your tank/water be too clean for montis?

 

[Ocean Mang]

Possibly Montipora Eating Nudibranches? Only thing I can think of...

After seeing the BIG picture on Melevsreef, it is confirmed, I've got em. Thanks.

 

[Ocean Mang]

If I remove all Montis (I do not have many) will the nudis eventually all die or do they eat other things as well?

 

[newbie916]

Evil little buggers. Best bet is not to keep monti's for at least 6 months. If you still have some monti's just pull them out and dip them in CoralRx. Then get a soft bristle toothbrush and find any of the egg sacs and scrub them off. If you have large monti colonies with crevices you'll just have to throw them away. I took small pieces of each of my monti's and tossed the large colonies. I was able to save a piece of all of them and they've all since recovered. Good luck on getting rid of the little buggers...

 

[glennr1978]

Just get a yellow coris wrasse and they will be gone in no time.

 

[NyReefNoob]

Just get a yellow coris wrasse and they will be gone in no time

thought that too and i had a pair of them, i ended up tossing all my montis as i tried alot of stuff to rid my tank of these, ended up with no monti's for a year to solve problem

 

[eengmd]

I had the same issue and could never ID a nudibranch but my tank is packed. I bought a twin soot hogfish and two months later my montis looked great.