Help needed!

[jcopp24]

I have a crowded 20 Gallon Long tank at home that is setup for reef with quite a few different corals in the tank. Last week my girlfriend came home with two bags and decided to suprise me with putting them in the nano tank. One bag had a leather coral that was pretty good in size. The other were two Crown Konch Snails? rather large snails with a very long nose?

The next morning I woke up and all of my pulsing xenia's in one side of the tank were completely "deflated" the three huge mushrooms I have were shriveled up smaller than they were over a year ago when I put them in the tank. Everything seems to be effected my hammer corals are getting much much smaller but only on one side of the tank.

I did an immediate 30 percent water change thinking the tank must have had some kind of chemical war... either that or those snails are the problem? Does anyone have any ideas?

 

[Agu]

You've already said it's "crowded", you could have some chemical warfare going on.

Did your girlfriend add the water from the bags to the tank ? Leathers can slime pretty heavily when disturbed and the water could have been pretty funky.

Or maybe it's just coincidence ?

 

[jcopp24]

Actually no she didnt do that... which is what I thought first... I know the leathers slime quite a bit.

Arnt the Crown Conch snails known for eating clams / coral? I thought maybe it went to take a bit out of one and end up causing the chemical warfare.