Long shot... plants for 0.5wpg?

with pH that low at least the ammonia is harmless. Going to need to very slowly raise KH. If you're talking about acclimating them to your tank, the important stats are GH and KH. If they are close then just dump 'em in.
 
I haven't been able to get GH and KH test kits yet. Plus I'd still be a bit worried just dumping them in since these are "old tank syndrome" fish. I added a bit of Prime before starting to acclimate them, and I've been changing out small amounts of water every now and then throughout the day.
 
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