You can also try dropping a lemon wedge in your water if you want a stronger lemon taste. Using pure citric acid will have the same effect.

You can find water filters at any home improvement store or supercenter. Most household water filters can purify about 10 US gal (38 L) of water every hour. [3] X Research source

These products are often sold where food supply, fermentation, and beer-making supplies are sold.

The system and installation can easily be upward of $1500, but if you’re having a problem with high pH in your water, it is an effective fix. [6] X Research source

Most plants thrive in a pH range of 5. 5-7. 0.

You can also use citric acid instead, but you may need to dissolve it in a little water first. If you’re planning to test the water again, stir in the lemon juice and wait about 5 minutes to ensure it disperses evenly throughout the water.

Vinegar has a pH of 2-3 and lemon juice has a pH of 2, so their effect on water is similar. [10] X Research source

You can buy muriatic acid wherever pool supplies are sold. Read the label carefully to determine how much muriatic acid to add to your pool. Add a little less than you think you need, wait 4 hours, and test again. Add more if needed.

While it’s still a dangerous chemical, sodium bisulfate isn’t as harsh as muriatic acid. However, it may not work as quickly, and often lowers the total alkalinity (TA) of your pool more than you may want. Use the packaging and your pH readings to determine how much sodium bisulfate to add to your pool. Sodium bisulfate is also found wherever you buy your pool supplies.

These systems range from $300 to over $10,000, depending on the features you want, but it could save you money if you’re spending a lot on chemicals to balance your pH.

Oils from skin, sunscreen, lotion, and dirt can all change the pH balance in your pool. If your pool is being used every day, you probably need to check it daily. You can find these test kits wherever pool supplies are sold.

You can find CO2 for a tank at a store that specializes in tank supplies.

These filters can cost upward of $50, and they take up a lot of space, so they’re best for larger tanks.

Driftwood can sometimes discolor the water in your tank. To avoid this, soak the wood in a bucket of water for several days before adding it to your tank. Do not use driftwood intended for reptile tanks in a fish tank. It may have been soaked in chemicals that could leak into the water and harm your fish. Even a small piece of driftwood will help filter the water in the tank, so pick one that looks like it fits naturally in with your decor.

Peat moss is also prone to discoloring the water in your tank. To avoid this, soak it for a few days in a bucket of water before placing it in your tank. The amount of peat moss you should use will depend on the size of your tank and the pH level you’re trying to reach. Experiment with different amounts to find what works for your tank. You can buy peat moss online or where fish tank supplies are sold.

The tannins in the Catappa leaves may slightly change the color of the water, but it won’t be as noticeable as using peat moss or driftwood