Your tank is beautiful! I love the layering of different plant heights, colors, and textures. Mine is less than 2 months old, but I hope when they grow up and fill in - I'll have a similar look. Very inspiring, thanks for sharing
Didn't happen overnight, that's for sure. While it was very instructional to start first with a nano tank and tissue culture, in hindsight
I made many errors in the process, never having dealt with a small ecosystem, and probably shouldn't have as a beginner.
It involved a lot of reading forums and watching YouTube vids (the "Green Aqua" channel was the one that not only got me back into
the hobby, but showed me how, and there were lots of others I still watch).
That said, having a "core" of plants to grow and increase was a very organic process, so to speak. The diatom issues were distressing
at first, but as the plants matured, they also developed microbial growth which made the transistion to a larger tank much easier
(and without diatoms! yay!). As I have plants that could get much larger than the current tank, the urge is to transfer to a bigger tank
after a year . . . but. It's a lot of work. I also have a 7 gallon betta tank to maintain. I might transfer that tank to a 15 gallon, and use
cuttings from the two current tanks to fill it out. The betta tank is low tech (no CO2), as would be the slightly larger tank, and I
know enough about the plants now through trial and error to know which would do better in what particular tank.