20 gal tank - good mix of community fish ?

Hey delta, it looks to me they are getting less shy than in the last video. Eventually they will have to get used to it. They can't hang out in a corner forever.

For the plants, you need to remove it if a leaf is covered by algae. For the nutrients, there is no need for additional nitrogen and phosphate. The fish poop in the aquarium will provide both of them. You just need trace minerals for micro nutrition.