Here’s my 55 long, Walstad inspired. Dirt substrate, capped with black sand. Tank has been running for ~4 years, although the last 2 years it was neglected. So all the plants in there are from my LFS (Optimum Aquarium).
Stocking:
School of guppies (I estimate 40-50)
1 Rubbernose Pleco
1 Siamese Algae Eater
1 Dwarf Gourami
1 Kuhli Loach
5 Otocinlcus
Tons of Malaysian Trumpet Snails
minimal Ramshorn & Pond Snails
Picture is too large for the website so heres a link: https://i.imgur.com/A0pS1cu.jpg