JAVA MOSS -SUPER EASY Low Light Aquarium Plant Is available for sale! Shop Now! Java Moss is a plant that is super hard to kill. It can handle the abuse of a rookie or can thrive in the tank of a professional. It is one of the easiest to keep aquarium plants we have for sale. It’s so hardy that you can keep it out of the water for a good long time and not worry about it dying. It’s actually a moss, so not to worry, it can handle no water. Java moss works great in both the low tech and high tech