Can a dying toadstool cause havoc?

[ctylermast]

So my tank had been doing relatively well. I’ve had an issue with phos botttoming out once or twice but for the most part it’s been managed. Now only thing I’m trying to get nailed down is my cal . Anyways my tank is about 8-9mo old. My monti digi has been struggling, but might have been from a nem sting(nem is since gone). My plating monti has been struggling for a while. My lobo has been in for about 3-4 weeks and I’ve got some skeleton showing still. And actually one of my zoa colonies seem a little angry. With that being said, I have a toadstool that just hasn’t likes anywhere I placed him, I eventually forgot about him, but he has melted down to a little nub. Could the toxins he releases possibly be causing the issues?

 

[tbrown]

It could definitely be part of the problem. Do you run any activated carbon in your filter?