How to decrease alkalinity in water. The easiest way to lower alkalinity is to add sodium bisulfate to the water. Adding sodium bicarbonate and muriatic acid. The native ph of most michigan soils is in the range of 55 to 77 appropriate for good nutrition for most plants.
Since co 2 controls the ph of the water you can either add co 2 directly to lower ph or you can use acid to convert bicarbonate alkalinity into carbonic acid h 2 co 3 which is just dissolved co 2. Follow the manufacturers. Lower ph by adding spa ph decreaser or sodium bisulfate.
To lower ph and total alkalinity use a strong acid such as muriatic acid sulfuric acid or sodium bisulfate all of which lower both ph and ta but at different rates. Raise ph by adding spa ph increaser or soda ash. How to lower alkalinity with muriatic acid.
Aeration is the process where you turn on all the jets and the air features so that more and more air is pumped in the water. When ph is high the water can produce scale leading to cloudy spa water or deposits of calcium on surfaces and inside pipes. Reports of nutrient disorders in landscape plants as the season progresses may be due to water with high alkalinity but are usually the result of some other issue.
You need to use an accurate water test kit that can give you correct readings. The first thing you need to do is calculate how much sodium bisulfate you need to add according to the volume of water in your tub as well as how much you need to lower the ta. Sometimes when lowering alkalinity the ph level decreases drastically.
How to adjust the alkalinity level in your pool. Most municipal water treatment processes reduce alkalinity. To lower the alkalinity by 10ppm you may need 16 lbs sodium bisulfate or 123 liters of muriatic acid for every 10000 gallons of water.
Determine if the alkalinity is high or low. Turn off your pools pump and wait about an hour for the water to stop moving completely. H 2 o co 2 h 2 co 3.
Read the directions on the bottle to determine how much acid needs to be added to your pool in order to lower it to under 120 ppm.