Hi I'm looking for some suggestions on what to attach to my drift wood( the piece in the middle). I have posted some pictures so you can get an idea of what it looks like. I was thinking to maybe tie some java Moss to the thick middle stem bit. I have another piece to the left which has some anubias tied to it. Would I need fertiliser for the anubias and some java Moss. If so seeing as they won't be in substrate what's the best way to fertilise them. I did read they are both hardy and can tolerate a wide range of conditions and don't necessarily need fertilisers. I have 10neon tetra, 5wcmm, 1 dwarf gourami, 4 amano shrimp and 1 nerite snail. It's a 23g long. Has a 18w led light, light temperature 6500K. Light on for 3hours in morning and 3 hours in the evening. Tank been running for 7months. Also I'm considering changing the substrate to fine black gravel. Do you think it would look good or would you keep it as is? Thank you.