Help..Everything is dead!

[stoneroller]

What kind of maintenance do you perform on your fluval? Schedule?

[kkiel02]

Aptasia will absolutely kill fish...I have seen them sting and grab one of my gobies as well a another fish...Remember my tank is infesteted wiht then and they are rather large. Some are over 2 inches long. I had no idea they were so bad....Also, i have been told that they can release some type of toxin???

we have completed a waterchange last week. I have a nice sump and protien skimmer along with a 405 fluval running Chem-pure and a few other filters...I will add the carbon soon.

Sand bed is over an inch deep on average. Before the death of the majority of the coral the Ammonia was 0...

I should have said they shouldnt kill a healthy fish. But with ammonia in your tank that probably weakened the fish. Remember ammonia and nitrite are poisonous to fish and inverts.

Your sandbed is good. I was just asking about that in case you had a problem with anaerobic and aerobic bacteria.

This is just going off what you said but I bet like John mentioned the coral died off from lighting, this raised the ammonia in the tank which is now effecting the fish?

With that old of a tank I would think the ammonia should drop fairly soon though. As your testing start looking for nitrite to spike some.

[FireWater]

For now I would absolutely run carbon and continue with water changes.