Last week I posted a thread discussing dying fish (see "where do I go from here" and had many helpful replies. Now one of our original green chromis has come up missing. I am beginning to wonder if this situation has to do with a larger over-all problem. We have a garden pond and have lost all but one of 20 some fish over a span of time this summer. We finally blamed this on aerial spraying for mosquitoes. We were convinced our well water was not affected because we had not lost any fish from our 3 inside aquariums and lo and behold, here we go. I know we should have been using distilled water but our well water has always been non-problematic. I am going to take a sample to a lab on Monday and have it tested for toxic substances. I can't decide if I want positive results ( yes it is toxic) or not . I hate to think what we have been consuming for the past several months. We also had a total absence of wildlife this summer and we have a pond for birds that is usually teeming with life. NONE this summer.