Vitamarin C Supplement By Brightwell Aquatics is a highly-concentrated vitamin-C solution. It is Buffered so it will not impact pH when used as directed. Vitamin- C is associated with improved tissue growth and with aiding the immune system. Vitamarin C is intended to provide benefits to all aquarium inhabitants. It is well-suited to use in coral propagation and grow-out systems. Vitamarin C is stronger than competing products and does not require refrigeration. Formulated by a marine scientist.