Hi All- I am new to the Forum and have owned a gunite pool with just basic white plaster. During a recent store the flood waters got into the pool. I have drained and started to acid wash using Muratic Acid in a garden sprayer. When I rinsed the first section it almost gave it a cracker look. However there are not visually cracks to the touch. They seem to fade as it drys. Any insight would be helpful. Picture attached.