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).
School of guppies (I estimate 40-50)
1 Rubbernose Pleco
1 Siamese Algae Eater
1 Dwarf Gourami
1 Kuhli Loach
Tons of Malaysian Trumpet Snails
minimal Ramshorn & Pond Snails