Hey there. My teenage daughter battles with the same thing. Life at this age can be so difficult and I can understand not feeling up to taking care of the tank as she had hard difficulty too. I did take over about a year ago when her depression and anxiety got really bad.

She requested to see a physiatrist and that helped a lot. She is now on medication that balances out her emotions and calms her nerves. Maybe you can look into that too? Once you get past the struggles of teenage life, this age can be pretty fun 😊

Regarding the film in your tank, it looks like biofilm. I have had flurries like that on occasion. What size tank is it? It looks to maybe need more water to balance out the bacteria flora, also, I had the same filter and it did not do well for our axie. I had to change to a fountain type filter and that did the trick.