The fern Bolbitis heudelotii is a fine and
much appreciated aquarium plant with very beautiful transparent leaves. Bolbitis
prefers soft water with pH below 7 and it responds to CO enrichment of the water with a nice growth.
In alkaline water, however, the leaves can develop black spots. It is easily
reproduced by adventitious shoots and rhizome cuttings, though adventitious
plants occasionly develops, too. It is easily grown on both rocks and roots
much like Microsorum. You can greatly enhance the application of this
plant - try to take a look at the article Plants
cultivated on stones and tree roots!