Yup! I got Java fern tied to wood, buried under the gravel. I can’t tell what is anubias, to me all aquatic plants look almost identical. I’ll post a pic soon for identification purposesTry some simple java fern tied to the wood in a few places. Also, in a low tech set up I have had great success with rotala rotundifolia, as well as medium species of valisneria. Just make sure that you are adding root tabs for the root feeding plants every month or so and you should be ok.