UPDATE......I am using a large amount of carbon to help extract toxins and metals from the water..I have accomplished a 50% 30% and another 50% waterchange in a 2 day period...I removed all of the casulties from the tank. All the fish seem fine, and I have a few selected corals that are showing SLOW recouping.. only time will tell in this situation....I contacted the manufactuer of the heater, and they are having me send it in for investigation..they say after they examine the heater, that they MIGHT reimburse me for the shipping to them....and a they will consider such for the loss of life in the tank ....I doubt any of that will happen but keep your fingers crossed that they ...AT LEAST PAY FOR WHAT THEIR PRODUCT DID TO MY TANK.. is there a lab where I can send a water sample to for CHEAP and get an accurate assesment on my water parameters including metals???????