I really don't know much about planted tanks. I picked up some wisteria last night and have it floating for my betta. It's corralled by his tube and he loves it. I have a 55 gallon with an 8 inch common pleco, 7 rasboras and the betta. I'm planning on putting in a terracotta cave for the pleco. Is it possible to encourage plants to grow on top of the terracotta? I'm hesitant to put them in the gravel with him and he occasionally digs up the plastic plants. I've switched most to weighted plastic plants. I was thinking more wisteria and Anubias, plants that can grow in low light.