1. Riccia 'It naturally makes a lot of oxygen bubbles,' Lo says. 'It's just a really cool effect. It looks like pearls.' 2. Tonina 'This is a very difficult plant to grow. If the water chemistry is not right, it can turn transparent, and the whole plant just melts.' 3. Glossostigma 'A very popular ground cover, it creates a nice carpet effect and is pretty easy to grow and maintain.' 4. Dwarf hair grass 'People don't know you can grow grass in an aquarium. This plant is very thin and hair-like. It softens the overall look.' 5. Java moss 'It is used for putting on driftwood. It makes the driftwood feel alive.' 