So, last month I went to India, for my brother wedding. We had entrusted my aquarium to my neighbor. Unfortunetly, my neighbor forgot to add top of water, while i was gone. So by the time i got back, the water was down to 1/2 of the level which is should be at. The salinity in the tank had skyrocketed, the ammonia, Nitrates, Phosphates, and what not were off the charts. Everything, including the fish seemed dead. However, on careful inspections, all my Zoa's somehow survived the entire process. All the apperent Apistaisa had died off. So my question was, has anyone had this experience with their Zoa's. Also, since im basiclly starting a new tank again, is it safe to use the zoa's again without worrying about Apistaisa showing up again, or should i just toss them?