I have a 10Gal Betta community & I'm in the proccess of stocking it with 5 habrosus cory's (have 2 so far, waiting for another shipment) as well as 1 spixi (zebra apple snail) & waiting on finding a Mystery snail as well.
But I won't go more than 3 more cory's & 1 more snail, even after 2 days with 2 cory's & the snail in there my tank is ready for a 25-50% water change.
Now I've heard from lots of people that snails are more of a burden than ADF & shrimp but I honestly personally find frogs & shrimp creepy! LOL
anyways hope this helps!
30gal Planted; Mollys; Dalmations: Sailfin(M), Balloon (F) & Common (F). Sunset Common(F), Julii Corys, Otto Suckermouth Catfish, Hillstream Loach, Leopard Loach, Clown Pleco, Blue Mystery Snail, Tetra's; BlackSkirt, Diamond, Black Phantom, Serapae.10gal Planted; Eeyore (Super Delta Marbled Betta M), hasbrosus Cory, Scissortail & Harlequin Rasbora's, black Neon & neon Tetra's, Otto Suckermouth Catfish. 2gal:group male guppies