How to safely lower the pH of seawater in open ponds

The pH of seawater in open-air ponds in spring is already high. If you wait until the pH of seawater in open-air ponds naturally drops to
The pH of the soil in the area where the open-air seawater pond is built is high, resulting in the pH of the pond water being high. Nowadays, many breeding units use drugs to thoroughly disinfect seawater after entering the pond, but the pH is also too high. First, find out the main reasons for the high pH of seawater in open seawater ponds. Since the pond water is fertile, phytoplankton grows in large quantities, and photosynthesis is strong, causing the pH of the pond water to be high, then reducing the pH mainly starts from two aspects: First, mainly by reducing the intensity of photosynthesis in the pond water rather than mainly reducing the density of phytoplankton. Mainly targets water bodies whose PH value is too high due to the first reason or water bodies whose pH value is below 8.6 due to the second reason. You can also use the mud method, use yellow mud 20g/ cubic meters ~ 25g/ cubic meters, first add ten times of water to make mud, filter it with 40 mesh sieve, add ten times of water to the filtered mud and then sprinkle it evenly in the whole pool, and the water body pH faster and have better effects. (1), drugs kill some phytoplankton. Killing method: Generally, directional wind blows every day at the beach. After the pool water is blown by the directional wind for 4~5 hours, the phytoplankton will collect with the wind toward the edge of the pool. At this time, 10g/ cubic meters of bleaching powder, 4 or below, the medication should be applied in an annulus extending 2 meters upward from the edge of the lower split pool to the wind head. When the wind force is 4 ~ 6, it will be extended