How do we neutralise lake water?

To neutralize lake water, you can add substances that raise or lower the pH depending on its current state. If the water is too acidic, adding lime (calcium carbonate) can help increase the pH. Conversely, if the water is too alkaline, adding sulfuric acid or vinegar can help lower the pH. It's important to monitor the pH levels carefully and make adjustments gradually to avoid harming aquatic life.