We have rocks. That have diatoms on also. Sigh lol will most likely buy new fake plants as these were cheap Walmart ones that are cracking a bit in spots.Yeah fake plants are mostly havens for algae really in the long run, although any plants provide most water bourne creatures "shelter" and safety. What's most important to/for the BB is the filter, then probably your substrate. Although if you do NOT have a substrate and a bare glass tank bottom, then keep the fake plants so then the BB can have the additonal property to propagate on more.
Start with anubias. They are very easy low light plants. You can tie them to a rock or driftwood with a piece of black cotton thread. With anubias you don't want to bury the rhizome (the green base of the plant that the leaves are attached to) or it will rot and die. So that's why people usually tie them to a rock or something. They are very hardy plants.Scared! Lol.
Where do you start with plants? What kind? What all do you need to keep them alive?