Whats the secret to keeping aquarium plants healthy in a freshwater aquarium?
It depends on the plant. Aquarium plants just like all plants have different requirements. Your first concern is what light level the plant requires. The Aquatic Gardeners Association is a great resource for live plants. Check out their web site and this should help you a lot. Without knowing what type of plants(s) you want to keep and what type of lighting you have I can’t give you much advice. For just about any aquarium you can have Java Fern and Java Moss. Some other relatively easy plants are Water Sprite, Hygrophilia and the Vals. Anubias are easy, slow growing plants though they need an established aquarium and can’t handle quick changes. Stability is the key to them.