I have 2 filtered tanks on an opposite side and between them is my TV. This is my first time I have owned a filter tank, yet I have taken care of my mother's filtered tanks as well (for about a month, still beginning).
So the left tank is absolutely clear but with different decorations than the other tank. Well my other tank (the one on the right side of the TV) is kind of foggy and blurry but you can still see through the tank.
My blue crowntail betta fish that lives in the right side of the TV is absolutely fine and swims all over the place. When I come in the room, Aqua (my fish) is usually doing the little "wiggle dance" and begs for food that way, perfectly healthy, no sluggishness, eats like a pig, and tails, fins, and scales are at the right place looking normal and bright colored.
Whenever I feed Aqua, I take out the leftover food, and I did check the filter, some little brown spots but eventually it will soon get dirty. I observed that there was a lot of dust... or bubbles? They were more like white things shooting up and down, not way too big like a bubble.
My water is room temperature (77 degrees F) and the water isn't THAT foggy, just a shade blurry than a super crystal clear tank on the left side of the TV. No sign of algae or stuff like that.
Question: Is my kind of blurry tank good or bad? What is causing this? Is it normal?
Thank you, I appreciate everything!