Okay, freaking out! My last day of adding the macryn plus was on Saturday. The old goldfish has lost some of his brown spots and the small one with the ulcer appears to be healing. So today I tested the water because the old goldfish was clamping up, once again, but everything appeared to be within normal parameters. It's really hard to tell with the ammonia test since I have yet to snag a vial and am using a mason jar (I know, terrible fish keeper), but I eyeballed it as yellow. So I did a 20% WC. Ph: 7.5
Anyways, I left for a couple hours and when I came home the goldfish were clamped and sitting completely still at the bottom! The little ulcer dude was up in the corner floating half sideways and motionless. So I immediately did a 70% WC. The ammonia appeared more green this time round, maybe .25ish. So they got excited with the WC and were swimming but now they are back on the bottom once again!!! What to do?!
I also added salt. I think if my old goldfish dies, I'm gonna lose it.