If my turtle doesn't eat them immediately after I throw them to the turtle aquarium, they will help me clean some of the food leftovers that my turtle always leaves around. If your turtle likes eating aquatic plants they raising them is a must. You can raise elodia in a separate plastic bottle or combine the plant raising to the fish or snail raising. You don't need to plant them at the bottom, you can let them float freely inside. All they need to grow fast is lots of light and warm temperature.
Water hyacinths are one of the aquatic plants most accepted by red-eared sliders.
These plants grow on the surface of the water. The leafs have a nice bright green color, they are tick and attached to something like a green bulb. They produce beautiful purple flowers. Unfortunately, you cannot grow them in a bottle. For these plants you will need a bigger type of container and provide lots of light and warm temperatures.