here is my 29 gallon planted tank with sand substrate
fish
1 marble angel
4 serpae tetras(one jumped out(getting 5-6 more))
6 cory cats
2 otos
2 blood fin tetras
plants
amazon sword
java fern
red ludwigia or ludwigia repends (or waterever)
cabomba
wisteria
green tiger louts
scarlet temple
crypt of some sort