Why do stomata open during the day and close at night in the theory of potassium ion accumulation?

The chloroplasts of guard cells undergo photosynthesis under light, and CO2 is used to increase the pH value in cells. Starch phosphorylase hydrolyzes starch into glucose phosphate, and the intracellular water potential decreases. The guard cells absorb water and swell, and the stomata open. CO2 produced by respiration in the dark reduces the pH value of guard cells, and starch phosphorylase synthesizes glucose into starch, so the concentration of cell fluid decreases, the water potential increases, the guard cells lose water and the stomata close. The osmotic system of guard cells can also be regulated by K, and ATP is produced by photosynthetic light reaction (cyclic and acyclic photophosphorylation), which absorbs K by actively transporting counter-ion concentration difference, reduces the water potential of guard cells and absorbs water to open stomata. Note: ① When the light intensity is lower than the light compensation point, the stomata are closed; ② Red light and blue-violet light have the best effect on the light quality that causes stomatal opening; ③ The stomata of Sedum plants are open at night, absorbing and storing CO2 (malic acid is stored in vacuoles), while the stomata are closed during the day, and malic acid is decomposed into pyruvate to release CO2 for photosynthesis.