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Tank Crash, Montipora Nudibranches

Looking for some guidance here...
Had a major tank crash in my nano, brought a few frags in from a couple different places on the same day, threw them in my nano with out dipping and next day... major problems. All my LPS were shriveled up. I noticed my montiporas receding with white patches visible. All my zoas were closed up tight, now most everything in that tank is dead or on the verge. I freshwater dipped and coral revive dipped a few frags to try and save, then threw them in my 90. About two days went by and same situation in this tank. At first I thought it to be some sort of pathogen, but never heard of anything affecting multiple types of corals. I was in the middle of acclimating my corals to more LEDs, so I thought maybe it was just coincidence and I went too far with the lights. I've since cut back on the lighting, testing every possible water parameter, and everything is in check. Not a sign of problems other than ALL my corals dying. Two clowns in my nano were just fine, all my inverts in both seemed unaffected. Fish had been removed 2 or 3 weeks prior from the 90, so another possiblity was something was amiss with my biological filter... but again, all parameters were in check, everything seemed normal. In the 90 at the time salinity was 1.025, alk steady at 10 dkh, nitrates were nearly unreadable, as far as I could tell with a crummy API test kit, the phosphates were at .25, calcium 400, ammonia and nitrites unreadable with 2 different test kits, and temp was stable. Only thing off was the Ph read 7.8 which it normally ran at 8.2.
Fast forward through the part of me throwing a 30+ dead corals away, (probably 10 or so colonies) and tonight I got the flashlight out and spotted at least 25-30 white spiked nudis going to town on what was left of my montipora in the 90. Checked the nano and a piece of montipora in there that is left had a few on there too.
Assuming EVERYTHING else is a-ok, is it possible montipora nudibranches could also affect a frogspawn, hammer, birdsnest coral, acropora and cause the zoas to close up? Do they put off some type of toxin? Cause an increase in phosphates due to death of corals? I've been going nuts trying to figure out the cause of all this with no luck. I've done countless water changes over the past week, installed a phosban reactor which has swung my alk from 10dkh down to 7dkh... ran huge amounts of carbon, and stuff is getting worse. Any recommendation on a course of action? I just dosed the 90 with the last of my FW exit. Didn't seem to have any effect on these buggers. What is the prescribed treatment for montipora nudis?
As far as the LPS corals taking a dump, could this be related? What else should I look for?
Thanks in advance.
 
What salt mix are you using? There has been some discussion about a batch of IO RC in a 160 gal. bucket, being problematic and nuking tanks.
 
As far as the nudis go. The only thing you can do is dip, dip, dip. Pick as many off as you can manually then dip. Inspect closely to get any egg sacks since the dip won't kill them. Next day same routine. Repeat many times.
 
I was using red sea, this happened at the end of my bucket, parameters were always stable with it, highly doubt salt contributed. Dipped roughly 50 or so nudis of 3 small montis, theres not much left, I doubt what I have left is gonna make it through. Just baffled why lps went as well, I think the nudis may have been munching on my other sps, but I just can't see them taking down frogspawn and acans.
 

mnat

Officer Emeritus
Staff member
Moderator
Do you have access to a copper test? It is really far reach but if you got copper contamination from something that could have the effect.

Monti eating nudis can go through monti, but should not go after other corals.
 
Do you have access to a copper test? It is really far reach but if you got copper contamination from something that could have the effect.

Monti eating nudis can go through monti, but should not go after other corals.

+1 Nudis are normally very specific with what they go after. When I had them they wiped out my GSP and then died off.
 
I will go out today for a copper test. I ordered a TDS meter for my RO which should be in today/tomorrow. Temp is stable at 78, haven't seen any spikes and I check often. I suspected either some type of metal or toxin in the water. Wife swears she hasn't used anything in the den and my 2 yr old always looks guilty of something.
 
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