Riparium How-To: High-Humidity Setups I am starting this thread with a semi-organized description of considerations and methods to have in mind when assembling a high-humidity riparium setup. This kind of tank is best for growing certain emersed aquatic plants that require very humid air. It is important to note that not all emersed aquatics need to grow in such conditions. Emersed Echinodorus swordplants, for example, are best grown with plenty of air circulation and somewhat drier air. The following lists the main groups of emersed aquarium plants that do require high-humidity: Cryptocoryne--all crypts that I have grown, with the exception of C. ciliata, require very moist air Anubias--especially A. barteri varieties. Some of the larger species, such as A. hastifolia, might be less demanding of high-humidity. Microsorum (Java fern) There are certain other groups of plants that can grow and look right in a high-humidity riparium, but these are the most useful ones that I have applied. These groups of plants are of special interest to aquarium hobbyists because they are readily available. High-humidity ripariums display can have a lot of visual appeal. The combination of the above water and below water areas in the same frame offers unique design opportunities. The next shot shows the best riparium of this kind that I have put together so far, a setup that I had going last year in a 55-gallon tank. In addition to the enjoyment of the whole planted layout, a high-humidity riparium can be appealing in several other ways. It is intriguing to grow the emersed forms of aquatic plants and compare them with the underwater growth habits, which are often distinct. High-humidity ripariums can be used for a particular hobby area that has been gaining in popularity in recent years, the culture of emersed Cryptocoryne for the sake of encouraging the development of spathes, their unique floral structures. The following picture shows a fresh spathe produced by the C. usteriana that I currently have growing in a 20-gallon high-humidity riparium. This brings to mind an important specific point: This post will quickly become too long with much additional explanation, so I intend to break up the narrative into several posts to follow. Here is the general organization that I have in mind. Aquarium setup and life support. Plant selection. Riparium planters and planting methods. Adapting aquatic plants to emersed growth and growing in the riparium. Livestock Additional specific observations and tips. With the next organized post that I write I'll start with topic #1, considerations to have in mind while planning out the aquarium enclosure for a high-humidity riparium.