Creates the conditions for healthy plant growth through ideal carbon fertilisationr convenient and simple applicationr time tested diffusion technique provides the perfect plant care with carbonr aids in raising the content of carbon dioxide through higher plant assimilation ph value stays at a healthy level to avoid the development of dangerous ammonia conections which raise the ph levelr no unsightly lime build up on plants and aquarium wallsr composed of co2 deposit 11 g 1 diffusion tube 1