Zoos disappearing

i've had that happen for no apparent reason. Son says my tank is too clean. .... i have had some success with dipping them just in case there is some sort of 'bothering' creature like a nudibranch or something...

 

Hmm...now if by disappearing, you mean shrinking into oblivian over a period of time, than it's your water quality most likely. I've heard zoas do best when there's a little nitrates in the tank. In general, most softies do better when the water quality is good, but not quite perfect. If you are talking about a nice, full zoa one day to a 1/2 or no zoa the next, then somethings eating them and you need to figure out what that is.

--AJ

 

my friend has the same thing but his zoas look like they are melting. 58g T5 6bulbs 12hr

 

I have had a similar occurrence with old T5 bulbs. Replacing them seemed to reverse course.

 

How many different colonies are we talking about? Someone I trust a bunch just told me at Spring Fest that when his Zoas start looking bad he dips in Furan 2 for 15 minutes to half and hour. He says it works very well. This was Todd Cherry of Cherry Corals, he has some of the best looking corals around so I trust his advice. I also have dipped in Revive with some luck.

 

Is there anything else going on in the tank? Algae growth, Cyano or Diatoms? Have you changed the carbon recently? Do you have any dip? Revive or Iodine? Good Skimmer?
These are the things I did recently to bring some of mine back. I lost quite a few first though because I had not kept up with maintenance. I changed carbon, GFO and tuned and cleaned my skimmer. I have also been running a micron filter in a Magnum canister filter. Zoas are coming back nicely now.

 

sounds more like you made friends with a zoa eatting nudibranch than water quality,  of course I'm no expert....i barely know what im talking about most days

 

Hey Jason, how do you tell if it is these nudibranchs? How do you get rid of them?

 

Joel it's a real pain in the butt until you get good at spotting them, the easy way would be to pull a colony that seems to be loosing polyps out of the tank and dip them in a heavy mix of iodine. Give it five or so minutes and then either shake the heck out of the colony or run a maxi jet pump over the polyps( if the colony and or polyps are pretty beat up i wouldn't use the pump as it will usually blow the polyps off the rock). If after shaking you notice theres small slugs rolling around the bottom of the container, you should dip all your pieces. Now PLEASE if you have them or think you do.....make sure to observe them, make sure they have small spike looking things coming out of there back, some call them feathers. Most tanks have regular slugs that cause no harm, so before theres a freak session just make sure to look at what you've got before having a heart attack....it saves on ibuprofen. And if you need and detailed info just shoot me a pm

 

Oh and I forgot to mention they lay there eggs in a white looking circle/ swirl pattern, if you have eggs you need to manually scrape them off, dips will not kill them.