Nudi's won't die!!

[lilredwuck]

Got a HUGE problem with zoa eating nudis. Ok, so I have dipped in Revive 4x strength for 30 minutes. Nothing. Next I dipped in Bayer, 15ml per 4 oz for 45 minutes. They are still crawling around. :headwally: I am not sure what to try next. Last thing I have in my arsenal is some hydrogen peroxide. I know it's used for byropsis, and it will burn the zoas depending on how long they are left in there, but I am running out of options. There is about 500 frags in the tank along with colonies, so dipping isn't a quick thing. Any ideas would be helpful. Thanks.

 

[cloak]

I got rid of mine by siphoning them out one by one. I hooked up some airline tubing to one of those airline sticks of the same size and removed them that way. It was a little tedious, but it worked.
The best time to find them though was as soon as the lights came on in the morning. The zoas are all closed up, so they tend to stand out more. GL.

 

[Cryophilous]

Manual removal and freshwater dips have worked best for me in the past. Once they get a foothold in a frag tank they can be a real pain to get rid of. They lay eggs everywhere and dips usually won't kill the eggs.

 

[philosophile]

I got a Tupperware container and put my zoa rock in it with tank water, and with a toothpick and lots of patience, I scraped every single egg off of my colony of zoa once... After that I think I manually removed two more nudis when they were still small and didn't get a chance to lay more eggs.

 

[claywp]

Flatworm exit works for nudi's. I had a large ZOA colony nearly destroyed. Treated once to knock out the living and a week or two later to get the newly hatched ones, haven't found anything to kill the eggs. You dip a coral and it will kill the live ones but it doesn't get the eggs. I dipped and qt'd but eggs slipped passed me and hatched in my DT. Google or search ZOA nudi's and flatworm exit.

 

[mfinn]

http://www.practicalcoralfarming.com/zoonudis.html

 

[claywp]

Great link, mfinn!! That stuff works like a champ!