u/Pupuoiii

Should i be worrying about bladder stones?
My guinea pig is 1 year old. He eats, poops and drinks normally. But i have not seen him pee at all, plus I sometimes find these white spots on the cage floor. I have heard that these white spots could potentially mean bladder stones. No possible blood or redness in pee is found in the cage.

I just had him in a smaller cage for about 45 minutes. He didnt pee once allthought he just drank.

I need advice. Should i lower calsium intake and increase vitamin intake, or what?