125 gallon South American fish community

[Snagrio]

Ooooh, I was MIA when you were actively posting this thread!
Congrats on the new haul! Hope that quarantine goes well for them! I would maybe consider doing a run of melafix as a just in case as well if it was my tank. That way you cover parasite and a bit of antibiotic/antifungal

I had no problems with hatchets when I was younger, but as an adult, they are so prone to ick that it isn't even funny. They're always the first ones in a tank to sprout cysts.
Neon tetras are very hit or miss. And neon tetra disease is not something that's easy to spot. If it WAS neon tetra disease, that is caused by a parasite and angelfish are susceptible to the parasite as well. Weirdly it seems cardinal tetras are a bit hardier though? As far as I know, there's no real cure for it... ;n;

Photos of your tank really made me miss working with fish! One day I really want to start up another tank of my own, just not in the cards with rental agreements being the way they are sadly ;n;

I have ParaGuard and MetroPlex (both from Seachem) that I used for the previous ich issue (both treatments did nothing which is why I went with Ich X), but I don't want to use multiple treatments at the same time and risk harming the fish.

Not sure if it was/is neon tetra disease. The neons kind of just wasted away one by one, though most of them quickly dropped after my misguided heat treatment when ich somehow infiltrated the main tank. Some discolored and/or developed wacky bodies/spines before they went which seems to be the common symptoms but again, hard to say for sure. None of the other multiple species in the tank seemed affected by it (which reminder includes other tetra species like black neon and glowlight) and often when a small fish dies I never find the body since multiple mystery snails, plecos and cories makes for an overly efficient "disposal crew" if you catch my drift.