I have a 30 gal tank that, up until recently, was thriving!
I had a school of 8 Blue Neon Tetras, 8 Harlequin Rasboras, 6 Rummy Nose Tetras, and a Bristle Nose Pleco.
Everything was going so well, and I felt the tank could handle it, I thought I could add a few more fish to bring even more...