Zoa's closing up

Toxic Slurpee

New member
Hi All,

So over the last few months all of the Zoanthids in my basement tank started slowly closing up. Started with one frag, then another, and now it's all of them. I took one of my small frags from that tank and moved them into my upstairs tank and they happily opened right back up within a day.

The water parameters are nearly identical in both tanks, except the basement has around 10ppm nitrates that I've been battling for a while.

Picture from basement tank:

http://i.imgur.com/wA6QT.jpg

Normally these guys have their feelers spread out a good 1/8" or more. Any idea what I could have in my basement tank that would be causing this? All of my other corals are doing just fine (mushrooms, hammerheads, acans, brains).

I'm using the same RO/DI water source and salt mix for both tanks.
 
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