Watermellon zoo issue

[theclemsonkid]

Ok, so I have had this watermelon zoo colony for about two months now. And suddenly this little thing pops up in the middle. Not sure what it is, but it's causing the heads right around it not to open. I have attached a picture. Does anyone know what this might be?
Thanks!
Jonathan

 

[theclemsonkid]

p.s. sorry the pic is so crappy. I actually have a nice digital, but then cord broke so I cant send it to my PC. So I had to take a pic off the screen with my cell phone and then email that to myself...

 

[jpc763]

It looks like Aptasis to me.
I had the exact same thing happen to my blowpop colony. I used Joe's Juice to get rid of it.
Anyone else?

 

[theclemsonkid]

When you hit it up with the Joe's juice, did that do any damage to the zoo's? And di it get rid of the problem?

 

[twolf323]

Just be careful not to get any on the polyps or the ones that it does get on will die.

 

[jpc763]

Actually when I did the Joe's Juice treatment, I got it on the zoo's too (really hard not to). They got really PO'd and stayed closed for a few days, but recovered. I did not lose any zoo's to the treatment.
But I would second the "be careful" message. I actually bought the Joe's Juice tip kit.

 

[earnit33]

Aptasia, Looks like anyway!