bare bottom

Hello, I have a 55 gallon tank and in one corner of the tank I made a separate section, made out of craft mesh, for my female betta sorority. The problem is that I can't put gravel in it because it's too heavy for the mesh. So right now it's "bare bottom", and I can't figure out how to make it...

I have a 90 gallon (48.5" x 18.5"x25 3/8") bare bottom Ryukin goldfish tank. I want to have some marimo moss balls, java fern on rocks and anubias on either rocks or wood. Maybe also some onion plants or jungle vals planted with fluval stratum in glass vases. I really like the...