No sea cucumber or sea apple. As far as ventilation, my back door was part way open, of course that is right next to the tank. We did do some cleaning in the family room where the tank is, so furniture polish - yes (but we have done this like a thousand times before) and glass cleaner - no not in that room but yes in the kitchen.
thank you everyone for all your comments / help.
One more question for everyone: What would you suggest we do now. We have several corals that seem to be fine and we have critters still in the tank, should we totally take all the water out of the tank, thus having to find a home for the corals till the tank re-establishes it self or should we do a lot of mini water changes. With not knowing what caused it, we really don't know what to do. Right now it is a mess cause we had to dig around all the rocks to get the dead fish out.
So starting over wouldn't be hard.
Billy & Mary
155 Bow front Reef tank w/
sump w/ refruguim, 20# of live rock, and protein skimmer and pump
200+ of Live Rock, with a 5-6 in sand bed.
3 Pendent Lights w/ 250K each
wave machine w/ 6 power head
2 P. Clowns, 1 Tomini Bristletooth Tang, 4 Shrimps, 4 emenaral crabs & lots of other snails & hermit crabs