How to Adjust Pond pH? (Practical methods)


Nonpond keepers might be interested in what pH level is. This analysis is essential to know the quality of water that can be fatal to fish. pH is the amount of free hydrogen ions in the freshwater. pH levels range from the acidic 0 to 14; 

  1. Seven is neutral, 
  2. below seven is alkaline, and 
  3. above seven is acidic. 

The pH buffer does wonder in maintaining the water balance.

Why pond pH swings?

A pond is natural wildlife. The photosynthesis pushes the pH to swing. All plant life inside the pond, including algae, use the sun’s energy to transform carbon into different compounds. When carbon dioxide breaks down in the water, it creates carbonic acid. This acid causes the pH to drop.

The next reason for fluctuation in pH is respiration—all moving beings in the pond breathes that adds to the accumulation of CO2. The elevated respiration makes the pond more acidic.

Another pressing perpetrator is excess ammonia. Fish contributes to severe ammonia levels. Ammonia that is split down by nitrifying bacteria forms NO2 (nitrite). The hydrogen atoms become comparatively free that makes the pH level fall. As ammonia is forever present in the pond due to the constant fish waste, the pond always tends to become acidic, which you should always take care of.

How to Balance the pH?

First, properly test your pond water’s pH. The level must be between 6.5 and 7.5. you can resolve if the pH is high if the level is 7.8 and above. Low levels are under 6.3.

If pH is too low, you may obtain pH up. This raises the pH slowly without harming plants and fish. It also neutralizes acids and other chemicals such as soil runoff and decomposing waste that make low pH. Pond Stabilizers and Pond down are also available as answers to certain pH levels. Add one tsp. per 35 gallons of water in your pond.

Please use the pond shield stabilizer sparingly, only when needed, and keep as much as a quarter cup per 150 gallons of water. You can only utilize this after you have lowered the pond’s pH level. When the pond achieves a good ph level, you may use the stabilizer for the next 96 hours to keep the pH balanced. After 96 hours, expect the pond water-stable even without the pond stabilizer.

The peat moss also does an exceptional job in restoring the pond’s pH level. You can add this to the pond anytime, but this is more powerful when there is a high pH level. Use this only in bad circumstances because it may mess with other plants. Place the peat moss neat the filtration system or waterfall. This will help filter the harmful bacteria from invading the pond. Put four inches of peat moss in those regions and let it grow. This also, at the same time, absorbs the magnesium and calcium from the water.

Was it worth reading? Let us know.