i think the best one Ive had was the water conditioner episode. lady called on the phone - her water we had tested earlier and it was terrible. so she called later about doing the water change. she told me she had water conditioner and everything and was going to do the change. well, she called back 2 hours later all the fish were dead almost right away. i couldn't figure it out - then i asked if she had mixed the dechlorinator in the water before adding it to the tank. she replied that she had put the DAWN into the bucket with the water and then poured it in the tank..............
also had a guy that thought since the heater was rated for a 55g tank he just had to turn it all the way up and it would be at the perfect "high range" for his fish......96 degrees and 24 hours later he was back in. but his Venustus somehow lived!!!
also had a family buy a Percula clown for a tank they already had set up - or so they told me, came back a couple hours later with it in a a bowl - the bowl they decided were going to keep it in....freshwater. that was one unhappy clown.
also had a guy that thought since the heater was rated for a 55g tank he just had to turn it all the way up and it would be at the perfect "high range" for his fish......96 degrees and 24 hours later he was back in. but his Venustus somehow lived!!!
also had a family buy a Percula clown for a tank they already had set up - or so they told me, came back a couple hours later with it in a a bowl - the bowl they decided were going to keep it in....freshwater. that was one unhappy clown.