Help! Can anyone ID what's growing on my zoas?

[Lindsay]

I've been having some issues with my tank for the last week or so... first, this happened to my candy cane:

 

Then, some of my zoos stopped opening up for the last couple of days:

 

And this morning, I woke up and THIS HAPPENED!!!

 

There seems to be some kind of white spongy fungus-like growth on one of my zoa frags.

 

This is a 12 gallon tank that has been set up since August. I typically do water changes every 1 - 2 weeks and change my floss every 2 - 3 days. I have 2 clowns (that don't seem to be stressing), and the rest of my corals are doing fine. My water params are as follows:

 

Temp: 78F

Salinity: 1.023

Ammonia: 0

KH: 40

PH: 7.5

NO2: 0

NO3: 20

 

Sorry, I'm still new to all this so I hope I've provided enough info. The only thing I can think of that has changed in the last month was that I removed my Koralia Nano power head and now rely on just my pump for flow (stock pump that came with the Cadlights tank)... am I maybe not getting enough flow now??

 

Hope someone can help, thanks in advance!!

[Weetabix7]

Your Ph is low and your nitrates are high, I would work on straightening those out.

They probably stressed your corals to the point that they got infected.

To deal with your immediate Zoa problem, I would recommend a lugol's iodine dip as described here:

http://www.nano-reef.com/forums/index.php?...t=0&start=0

[Lindsay]

Thanks for your help!

 

Um... Mods, can someone please move this to the proper subforum? I have no idea how I got this posted in "Reef Cleaners". Oops!