white patches

Hello, I have a question. I recently noticed that my saltwater tank started growing white cotton like slime on most of its decorations. I will attach photos. Not really sure what it is and what to do about it. Is it dangerous?

I've had my betta for months now and have changed nothing in my routine, but lately he has developed white spots on his left face and top of his back (and a few other places that didn't show up well in photos, all small). I've seen posts of somewhat similar conditions being aggressively deadly...

Hi all, I just got some amano shrimp a week ago and one of them is getting white patches. I posted pictures below. He has become progressively worse, but his behavior is normal. My water parameters are ph 7.4, nitrates, nitrites, and ammonia all 0. I panicked and put him in a quarantine tank...