read my post to Michi that I made this morning, I think I explain things a
little better about what I meant. To the novice it is too easy to see a co2
chart and say, "oh, all I have to do is put some discus buffer in the water
and I will have more co2!" That is why I said it is innaccurate unless you
are adding co2 to the water to alter the ph

Yep, you are 100% correct about that, we try and stop that kind of
thing before they do that:-)

I do not know how many tried that at some point when they started this
hobby.
Another issue is that folks suggest that aquatic plants prefer acidic
waters as well. Not true, they like CO2.
So that causes them also to try and lower pH.

I'm cranky about that when folks say or do that myself

Regards,
Tom Barr