This was a craze awhile back. There was a never ending thread on it over on RC. I tried it myself and didn't see any changes other than having to battle my PH due to the pills dropping it.
Yeah I read that thread. It seams now that there is the powder that is buffered to a PH of 7. I have to try something as I am loosing Zoas as we speak
How much and what type of Vit C were you dosing? Size of tank?