Blue Hygrophila (also known as Blue Hygro) is an easy plant to maintain, is an attractive stem plant that develops a blue tint to its leaves. It can thrive in low-tech setups as long as it has moderate to high lighting. It does not require CO2 supplementation, but it will certainly benefit from it. As it matures, its leaves provide extensive foliage that is very suitable for the background of the aquarium. It can be pruned and cuttings can be replanted for propagation.