Yes, I agree, your numbers seem fine. Maybe a little high on the KH/GH for true wild Discus but probably perfect for the breeder raised Discus you are likely to buy. And should have enough buffering capacity that PH will be stable. And I beleive 6.8 is about the "ideal" PH for them as well, although I am admittedly not a discus guy. Ph is not as big a deal anyway.
Do some reading on Discus here if you want to raise them. From what I understand they like soft slightly acid water. That would be close to what your water is, close enough that you would not need to worry about it in my opinion. Do some more research and make your own mind up but I don't think you need to do anything other than stay on a good maintenance program.
Do some reading on Discus here if you want to raise them. From what I understand they like soft slightly acid water. That would be close to what your water is, close enough that you would not need to worry about it in my opinion. Do some more research and make your own mind up but I don't think you need to do anything other than stay on a good maintenance program.