Marimos are low-maintenance aquatic plants that only require low light and bi-monthly water changes with tap water. Marimos are a Japanese species of algae that only grow 5mm a year, mine are sourced sustainably in the UK. Collection only: Anywhere along West Street, Division Street or outside any of the university buildings nearby. Great as a Mother's Day gift or a gift for any other celebration. Ideal as a student flat decoration. Please check out my other terrarium jewellery listings.