Hi again.
It took about half an hour per week to do the water change and trim the plants, I used hose and a circulation pump to speed up the process. The plants on top of the tank are Ficus pumila and Epipremnum pinnatum, the first one can tolerate some of its leaves being underwater, but not all. The latter doesn't like to be submerged for long. But they can be grown using the hydro culture method, roots in the water, other parts of the plants in the air.
About the tank:
TB, fish tuberculosis, Mycobacterium sp. infection
The tank is now going to spend few months without water and I will desinfect it repeatedly until I think there's no more Mycobacterium. Some of the fish I needed to euthanise, others went to a place where the people are aware of the infection. Plants, tree brandhes, sand and all the rest I had to desinfect and get rid of them.
But don't worry. My bettas aren't infected. They, their tanks, their food, the other accessories haven't been in touch with the infected tank. I have made sure of it. There isn't fish tuberculosis anymore here in any tank. I bought new tanks and new equipment for breeding and I intend to desinfect all the stuff regularly.
I wouldn't like to talk about this anymore. I would really appreciate if there wouldn't be much questions and stuff. I spent a lot of time making this tank beautiful and then I had to rip it apart. It makes me sad and angry.
Now there's only me and my bettas.