I lost my betta Nymph Phlox and I think it may have been because most of the plants I put in my 5 gallon with him were floating in one mass. I found him right in the middle ontop of it. I don't feel comfortable getting another betta until I can fix that issue. I have water wisteria, anubias nana and java fern. Literally 1 of each is actually planted in the gravel. Anything I can do to anchor them down?