The Proper PH for Livebearing Freshwater Fish

Keeping livebearing, freshwater fish can be a wonderful hobby for any aquarium enthusiast. Livebearers are a good choice for first time fish keepers because they are relatively easy to care for. Generally hardy fish, they adapt easily to a variety of water conditions, including proper pH levels. The pH of water measures the alkalinity and acidity of the water, with a pH of 7.0 being neutral. For freshwater fish, the aquarium water should be somewhat alkaline, with a pH between 6.5 and 8.0.

  1. Maintaining a Steady pH Level

    • Livebearing fish generally adapt well to a variety of water conditions, including pH level. Therefore, it is most important to keep the pH level steady than to achieve a specific number. Before introducing fish into a new aquarium, test the pH of the aquarium supply water or tap water used to fill the fish tank. <br />?<br />To determine the pH level of the water, let the water stand for at least 24 hours. This is especially important for tanks filled with tap water. Running water contains carbon dioxide, which can cause a false pH reading. As the water stands, the carbon dioxide will dissipate and aquarium keepers can get a true pH reading.<br /> <br />Knowing the pH of the supply water is essential for keeping livebearing fish healthy. While most livebearers adjust easily to water with a pH between 6.5 and 8.0, fish do not adjust easily to rapid changes in pH. If the supply water̵7;s pH is within the normal ranges, it is best not to attempt to adjust the pH level. Keep the levels steady and introduce the new fish.<br /> <br />A steady pH becomes increasingly important for fish keepers who fill their aquariums with tap water. Tap water often contains buffer chemicals that make the water resistant to pH changes. Products used by aquarium keepers to change the pH of supply water are unlikely to work properly on tap water. If tap water tests between 6.5 and 8.0, do not attempt to change the pH. Fish will thrive in an aquarium with a pH in this range. Continue to monitor the pH levels to ensure they remain steady. A falling pH may indicate problems in water quality or chemistry.