Yeah, so my advice is not to keep any fish if that's your goal.
I don't know about that. Here's my tank, and I have to admit I have tested the water parameters exactly zero times in the 18 months so it's been up.
During set-up I just waited a sufficiently long time before adding the fish (gradually, small ones first) that I knew it had to be cycled, and since then there has been no need to test the parameters. OK, twice in those 18 months I've brought the water in to my LFS to have them test it, and the guy there said it was fine (I have no idea what the numerical results were, nor do I care, despite taking AP chemistry in high school
Unless you're into chemistry, what is the purpose of testing? Seriously. I mean, I add CO2, but I'm not sure of my ppm. The answer to how much CO2 is in the water is, "Enough to grow the plants, but not enough to poison the fish."
I add ferts, and the the answer would be similar for all fert-related parameters.
Maybe I've just been dumb-lucky (if so, knock on wood!), but I just don't understand the fetish with testing.
Isn't that part of the beauty of a real planted tank? You add lots of light and CO2 and ferts for healthy abundant plants, and they help moderate the water for your fish, right? At least, that's been my experience.