My goldfish tank is in desperate straits. I'm not sleeping. Maybe someone else has seen this and will recognize what to do.
First, my water quality is not the issue. The tank is seasoned, I like maintenance, I test regularly, its a planted tank, I'm on a well, and this morning's test strip reads:
0 nitrite, trace of nitrate, ~7.2 pH (we've been so wet in S. Oregon that our well's pH and KH are diluted somewhat over summer numbers) KH hovering around 80, and GH off the test strip range, high. I grow plants like mad, fish all happy. it seems to be going along swimmingly, and then:
Several weeks ago, one goldfish started slowing down. Tended to hang out low in a corner. Fins not clamped. Still came out for food, less enthusiastic about whuffling around for more though. Would retreat to the back corner. She slowly... slowed down.
One thing she seemed to be doing toward the end was chewing a lot. Not gasping, but working her mouth, as in chewing, without her gills really speeding up compared to watching other goldfish. I wondered if she had something stuck in her throat, and held her and looked as far in with a flashlight as I could. Saw nothing. Not a mark on her anywhere. No other behavior to clue me in.
I tried salt at first, then when I saw the 'chewing' I tried medicated food, and ramped up from there. At this point I don't remember the progression of things I tried, in which order. This is over several weeks- carbon and changes in-between, she seemed to be the only one having an issue, and I didn't have a free tank to move her into.
I believe we tried Metroplex, Kanaplex, Paraguard either or both as a soak or in the water (my son kept track and he's not here to refresh my narrative with factoids), polyguard even, I think. That fish dwindled and died. Quietly. Just hanging below the lily leaves looking the same as days before. Just slower. When I pulled her out, I looked into her gills, and they were nicely colored, not a mark on her anywhere.
So on the day she died, another goldfish had begun to sequester itself. That's been a week ago, and its 'chewing'. I did a massive water change, and upped the temp, and put in erythromycin. Yesterday was day 4 of that (api box says 4 days, maracyn box says 5 but I'm utterly out of meds, have cleaned out two towns of meds, no one else open until tomorrow for hopefully finding more). Over the first two days, she seemed to perk up. Day three? She started to hang at the back again. Day 4, she was slowed back down, and I suspect an additional fish of slowing down. I threw in what Maracyn 2 I had, just shy of a full dose, on the gamble that I'd locate some today, but can't. Hoping for some tomorrow. That might have been a misjudgment, but this HAS to be halted and I've no clue what it is. When she hangs around close to the top (not gasping at the surface, but hanging gently an inch or two below the surface), she lets her dorsal droop, and she droops a bit, just hanging. When she does come out for food, its hesitant, like slowly waking up.
Yesterday, I rounded up a 40 gallon, got it set up with a sponge from a healthy tank, and will add some of the goldfish's own water to it, some of their sand too, in the idea that Im helping season the tank, and move her. And the one I THINK might be slowing down. I want to operate on the idea that maybe the big tank doesn't have widespread carnage about to happen. And the limits of medication I can get my hands on require less gallons anyway.
I'm considering switching to acriflavine (if I can get some today, might have to wait till tomorrow to meet seller, which is still faster than shipping). Or possibly, should I change to ParaCleanse? I HAVE NO CLUE WHATS HAPPENING HERE!!! I could try Jungle Fizz and Kana (kanaplex alone achieved nothing) but I think I'm running out of time for making the RIGHT call, and haven't a clue which thing to try. I have kana and jungle fizz on hand. Plenty.
One final thought/clue/hint-
When putting the first fish in a specimen container to feed medicated food (Focus, Kanaplex, Repashy, bit of Garlicguard) it appeared there was some mucus/spit/tad fibrous stuff in there. I haven't figured out if it was the Focus coming off the food (need to make fresh and run a test on that) or if she'd breathed/spit it out. It wasn't slime coat. It came out of her mouth as she spit the food away. Couldn't get her to eat any medicated food. Now, when the second fish started to set itself apart at the back, when I 'woke' it up by feeding the tank, when it came to, it worked its mouth a fair bit, fast, as it got active. And we saw fibrous spit (best description) in pieces in that corner. DID that fish spit out clear, spit-looking stuff, with a bit of fine woolly fibers in it? I've not seen that particular rubbish floating in a goldfish tank before. It was different than the usual. Clearly, comes out of mouth if worked hard enough... but in the instances I have observed it, I can't be certain of its source (Focus? Happenstance?). FWIW.
Thank you Folks