Environmental News Network: If you ever had a marine aquarium (or a swimming pool) you know that it is very important to keep the level of acidity (ph) within a narrow range for optimum results. In the case of the pool, to minimize corrosion of the metal parts in a heater and to reduce damage to the pool lining or paint. In the case of the aquarium, the ph is directly related to the health of coral and fish. The ocean is no different. Acidity is an important parameter that relates to many other parameters including the health...