- 1). Test the pH of the water in your aquarium and the source water.
- 2). Make 10 to 20 percent water changes on a weekly basis if your source water is lower in pH than your aquarium water. If your source water is higher than your desired pH, then find a new water source. Deionized water can be obtained fairly cheaply, or reverse osmosis water can be used.
- 3). Remove shells and coral decorations. This is not practical if you have a reef tank.
- 4). Replace some of your dolomite or crushed coral aquarium substrate with aquarium gravel. Make sure the gravel is approved for saltwater aquariums.
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