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Asplenium nidus 'Crispy Wave' is a charming house plant that is exceptionally efficient at removing toxins and harmful particles from the air. It also absorbs a significant amount of CO2 and produces oxygen in a highly efficient manner. The foliage has a distinctive 'waviness' which actually increases the surface area of the fronds. This, according to NASA's air purifying plant study, is the number one factor in determining a plant's oxygen producing capabilities. In addition, the fronds' thickness and rigidity allow the Crispy Wave to filter harmful particles such as formaldehyde from the air to a higher degree than even the fabled but fragile leafed Boston Fern; a high scorer in the NASA study. The fact that the Crispy Wave can grow endlessly if put in a larger container means that its air purifying properties will only improve the longer you have it.