I found a garbage at the house just purchased full of what looks like baking soda purpose would serve for pool?

Pool pH Level Neutralization: Baking soda is commonly used to increase the pH level of pool water when it becomes too acidic. Maintaining the proper pH balance is crucial for the comfort of swimmers, the effectiveness of pool chemicals, and the longevity of pool equipment.

Alkalinity Enhancement: Baking soda also increases the alkalinity level in pool water. Alkalinity acts as a buffer, helping to stabilize pH levels and prevent sudden changes. Proper alkalinity levels are necessary for effective chlorine disinfection and prevention of corrosion in pool equipment.

Water Softening: Baking soda can help soften hard pool water, which may contain high levels of dissolved minerals such as calcium and magnesium. Softer water can improve the feel of the water, reduce scale formation on pool surfaces, and enhance the efficiency of pool chemicals.

Flocculant Aid: Baking soda can act as a flocculant aid in pool water. Flocculation is the process of clumping together small suspended particles and impurities in the water, making them easier to be filtered out. By aiding in flocculation, baking soda improves water clarity and reduces the amount of debris in the pool.

It's important to follow the recommended dosage guidelines provided by the pool chemical manufacturer to avoid overdosing and potential imbalances in pool water chemistry. It is also advisable to test the pool water regularly and adjust the levels of various chemicals as needed to maintain optimum pool conditions.