Yeah wow, that's unfortunate you need to do so much work on your water to make it viable, that does sound like a real pain.
I enjoy watching Primetime aquatics, they're very informative.
Sounds like we've kept similar fish. I have noticed that Neon Tetras can be quite finicky, I have 1 out of 20 that has been alive for 3 years but the others consistently died from month 1 through to my last neon. A bit disappointing but I guess they are bred quite heavily.
But thanks for the reply Tony, appreciate it