Pond is black polyethelen (semi rigid) plastic, with fountain/recirculator...right now I have NO fish, they keep dying. Just plain old goldfish....Had 4 about 4" long that lived for 2 yrs, then died. Have bought about 25 fish this summer and they all died.

Fish store person here has had some bad lots but this is ridiculous. I tested pH in mid evening and it didn't go down even after adding pond salts and DeChlor. My tap water has enough chlorine in it to kill fish so I have to use DeChlor.

Actually, I was naming my fish but they kept dying and I ran out of names. Besides, how do you name 20 feeders?