I've been having problems with my bettas falling ill, usually to fin rot, sometimes nothing apparent, and often dying. I've been ripping my hair out trying to solve the problem. Oftentimes they'll recover with medication, only to fall ill again within a month. Some haven't been affected at all, but most have, both jarred males and females in community tanks. They're getting excellent care, and the water is changed every 2-3 days. All other potential problems have been ruled out, so I've turned to my water.
I've just (almost) installed a RO/DI filter. Every possible thing that could have gone wrong with installation HAS gone wrong, and it leaked like a sieve. I'm to the point where once I fit the canisters with thread tape and figure out why the float valve doesn't go together the way it should, I'll be set.
So today I finally had enough RO/DI water to test it. It tests at 1 TDS. I'd rather it was 0, but for the moment, I'll take what I can get. Got curious and tested the tap water. Then the jar water.
RO/DI = 1
Tap = 539
1 Gallon Jar (which admittedly has salt, Prime, & IAL added): 2230
I'm thinking I may have found my problem. Also, after running maybe 70 gallons, the DI filter is almost exhausted. Even with a high tap TDS, it doesn't seem like that should have happened. I'm guessing the membrane is bad?
Any thoughts, advice, etc. is so welcome right now. I know I'm stubborn, but I'm almost amazed at myself that I'm still going after 9 months of dealing with (almost) every fish problem under the sun. The first time I started keeping fish, almost 20 years ago, I also had much trouble, but that ended up being caused by something else.
Last edited by Butterfly Bettas; 12-17-2017 at 10:54 PM.
Reason: Added jar size