For some reason my ph has been really low lately it is 6.6 right now im pretty sure 6.6 is too low for an oscar tank correct me if im rong.

ok, you're wrong...
Somewhere between 6- 8 is cool for oscars, as long as the pH is stable.
6.6 is perfecly fine.

oh okay cause it just seems low idk what i was thinkn it was seven maybe all the water changes ive been doin idk. My dad noticed the tank was gettn cloudy and he said it was ugly so that upset me so i cleaned it inside and out even put windex on the glass and kissed it and put a red bow ontop so he cant say S**T lol.