I have never really done this except for this last coral I have purchased. It was a leather cabbage and i dipped it at tank temp for two minutes. It has been in the tank kind of withered for a day now. Is dipping good or does it do more damage than needed? The reason I dipped in the first place, cause I believe my last frag might have brought zoanthid spiders. Two weeks in a row I have found two spiders bugging zoanthids (total four spiders) and have pulled out. Week three, their was really no sign of problem on zoanthids but this thing in picture walks past. This spider is quite a bit bigger and makes it five. Are these spiders and has anybody had success on getting rid of them?

Hmmm here is pic

That my friend is an aeolid Nudibranch. Can be killed but more then likely it has already laid eggs. The best thing to do is to go over your rocks very very very carefully and check for eggs. These guys only eat Zoonathids......so watch your zoas....Check your zoas.....and check for eggs. I would use the coral dip by two little fishies called ReVive. It killed them for me. But I plucked all of the eggs off after the dip. This stuff smells like clorox.....so a heads up. But it works GREAT, I highly recommend it.

ya... i freshwater dipped a leather after reading it was recommended for all corals after reading about nudibranches. I check my zoos often and the only thing that resembled eggs was this white stuff on the side of a zoo. I couldn't even scrape it off with a blade. I have also read that they lay eggs inside the zoo. Where have you heard they lay eggs?

wow, how would you get them off? If you scrapped them off I bet they would go "flying" into the water.

Have not seen anything like that. Like I said, I have only found about five of these things and that is over weeks. Haven't seen any this week so I hope I am in the clear.