You are caring for the freshwater aquarium of a friend while they are on vacation.You are told to check the pH of the tank and make sure that it stays between 6.5 and 7.0.In order to ensure that you do not have to worry about the pH you

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Adding a buffer to the aquarium water will help minimize changes in pH. This is the best choice to ensure that the pH stays within the desired range without having to constantly monitor and adjust it. Aspirin, NaOH, and HCl can all have negative effects on the fish and the aquarium environment, and should not be used unless specifically advised by a knowledgeable aquarium expert. Doing nothing may lead to pH fluctuations that could harm the fish and other organisms in the tank.

You Are Caring for the Freshwater Aquarium of a Friend