Hi Juissi,
one of your recent tweets was:
"pH=8.4, Conductivity=680, KH=11, GH=11. We don't understand those numbers much but the water tastes like real Tanganyika!
2:44 AM Jan 16th from web"
where does this 'web' tweet come from?.
It appears that the Arduino is generating the 'API' tweets using the Twitter API, and there is nothing in your source code regarding pH, Conductivity, KH, GH (as far as I can see).
It's an interesting project, and thanks for sharing.