



Betta 20 gal - considering adding tankmates
I am not sure if I should add more fish or snails, or if I should leave it as-is.
I've had this 20 gallon long tank going since April. Substrate is EB Stone organic indoor potting soil capped with pool filter sand. I have a 8" sponge filter in the left back corner with a weak air pump (piezoelectric).
Stem plants are mostly Limnophila sessiflora, Pogostemon stellatus 'Octopus', and Rotala sp. Floating plants are 2 kinds of duckweed, Salvinia minima, and Pistia stratiotes.
All I have in there for livestock is my betta who seems super happy, one big ramshorn snail, a bunch of bladder snails, and about 12 neocaridina shrimps.
And also I know I don't have a lid, so I keep the water about 3 inches down from the top and have a pretty solid cover of floaters to prevent jump accidents (the 3rd photo is right after thinning out the duckweed).