This stem plant grows small, oval shaped leaves that are bright green in average aquarium conditions, but can take on an attractive copper or pink blush under intense lighting with lean fertilisation.
Bacopa Caroliniana is easy to grow, mainly requiring moderate lighting and a small amount of nutrients. CO2 is beneficial but not required, making this plant perfect for low-tech aquariums.
This relatively slow-growing stem plantï¿½s primary requirement in the aquarium is sufficient light, which at the lowest should be maintained at 2 watts per gallon. Fertilization with both macro- and micronutrients is unnecessary but productive, as is supplemental carbon dioxide injection. If lighting is intense and nitrates are low, this plant will turn a dull copper or brownish color. When phosphates are limited, it will attain a pink blush. Emersed culture outdoors on the edge of a pond or in a well-lit tub will produce good growth and the characteristic purplish flowers of this species. B. caroliniana is an excellent candidate for non-CO2 aquaria.
Propagating B. caroliniana is easy, since the bottom portions of any severed or 'topped' shoots easily develop new growth tips. It also regularly produces runners at the base of the stem, which can be carefully trimmed and replanted.
The stems of B. caroliniana are most effectively employed in the aquascape if they are placed in a terraced or tiered grouping in the middle or front area of the aquarium, where their unique geometry constitutes a stable point upon which other plant groupings can be based.