So, I went to Petco today and I discovered why all my bettas suddenly got sick...
(I could *NOT* figure it out. The only new fish were females, and everyone is *strictly* QT'ed for two weeks, and *nothing* transfers, not water, not equipment, not even food and/or meds...And the fish who suddenly came down with stuff were guys that had been with me for a year or close to it...and had been healthy previously. Then I saw *THIS* today when I went by Petco.)
Apparently, when they change the betta water cups, they dump the old, nasty water into the aquariums where they sell the loose plants!! GUESS WHO PURCHASED LOOSE PLANTS PRIOR TO BETTA DISEASE OUTBREAK?!? Yeah. You guessed it! UGH!
Plants were QT'd for a week before aquarium introduction, but that was in dechlorinated, heated, filtered water (I set up a special Rubbermaid with it's own HOB/gravel filter for the plants in QT.) so the stubborn stuff...like gill flukes...was still very much alive when they went into my tanks.
For that matter, is there a way to sterilize plants? I mean, I can't dump salt in there, and I worry about meds killing the plants...??
I was so angry when I realized what they were doing! Not only are they spreading every disease and parasite under the sun between all the bettas, they're spreading it to *any* healthy stock that comes into contact with those plants as well! ARRGGHHH! I will never, ever again purchase loose plants from a Petco or a Petsmart. I mean, for that matter, WHY?! Why not just dump the old water down the sink, why "recycle" it into the plants? Ugh...so stupid.