If Max's urine is too yellow and is concentrated that means he is dehydrated and needs to replenish his body with fluids. If his urine is clear and diluted that means his body has enough fluids.
If urine is too concentrated and opaque, it would be hard for it to be excreted by the urinary tract leading to different complications in the body, like developing excessive salt in the kidneys.
Antibiotics can kill certain bacteria, but sometimes it's better to just let the bacteria run its course and let it die out on its own. It should be noted, that with our mass usage of antibiotics, certain bacterias have developed a resistance against antibiotics and that is not good at all.
