Growing Bacopa I am doing a science fair project and no other site has any helpful information on the Bacopa water plant. If you have any information concerning the plant please send to me thank you < Bacopa caroliniana is distributed along the southern United States. It is reproduced through cuttings and seeds. In the aquarium it requires medium light of about 2.5 to 3 watts per gallon. It can live either partially or totally submerged under water. It likes a neutral pH of around 7.-Chuck>