Hi, I am having trouble keeping a Betta in my aquarium. I have had a aquarium when I was young and had male and female bettas and had no problems. I had them in community tank with a few other tetras and few other fish, which I don't remember what breeds I had. I setup my tank in November and I had followed the book with cycling my tank and buying a couple fish to start before getting more. I do about a 2/3 water change once a week, use water conditioner, and test my water. The heater keeps the temp at 75. When I test with test strips, my nitrate, nitrite, and pH is all good. Water is a little hard but not bad. I have tetras, mollies and algae eater. I have aquarium salt in because of the mollies which I did not have years ago when I had bettas. I had got a male betta back in December and he started to get white fuzzy patches on and within 24 hours he died. I got a female betta Sunday and she was doing fine until Monday night when she found an opening in hood for the heater and jumped out. I got her back in and she seemed fine. The next evening she had a white patch on her back. I got some bettafix and some drops for ich and parasites and administered that in tank. I even gave her a aquarium salt bath, but I think too much time passed before and she didn't make it. I am really frustrated that I can not keep bettas now when I did years ago. Only difference I know of is that when I was at home we had spring water and now I have well water and wondered if that could be a problem. I have lost some other fish over the time have had aquarium setup but not due to the white fuzzy patches that my bettas get. Anyone have any ideas what the problem could be? Also another question...I have a aqua tech power filter and when I have lost any fish, most of them end up wrapped around filter intake. Can this be to powerful if they get too close and be sucked against it and can't get loose? Seems strange that they all have been at the same place in aquarium and I never see it happen since I work full time. Would love any ideas or suggestions anyone has on these questions. Thanks.