The only reliable way to remove calcium silicate deposits is with a pumice stone — and a lot of hard work. These stains are notoriously difficult to scrub free. If you have a vinyl or fiberglass pool, you won’t be able to use a pumice stone. It would scratch the pool.Click to see full answer. Keeping this in view, why is my fiberglass pool turning white? Calcium build-up on the pool surface High pH levels in the pool water will cause any calcium in the pool water to bond to the pool surface. When this happens it often leaves a white gritty layer. As the picture shows, this white layer becomes very noticeable when the pool water drops below its normal level.Likewise, how do I clean the sides of my fiberglass pool? How to Remove the Stains From a Fiberglass Pool Remove oily stains from the water line with non-abrasive household tile cleaner applied with a soft cloth or sponge. Eliminate brown stains caused by iron by scrubbing the area with a chlorine tablet. Take off turquoise-colored stains caused by copper by scrubbing them with tile cleaner. Also, how do you remove calcium deposits from a fiberglass pool? Removing Calcium Silicate Calcium silicate deposits are removed with a pumice stone and a whole lot of scrubbing. However, you can only use a pumice stone on tile or concrete. If you have a fiberglass pool, a pumice stone will scratch. Your other option is to then use a professional calcium remover.Can you acid wash a fiberglass pool?Acid washing a fiberglass pool is not recommended, nor is it very effective. Most stain removal chemicals can be safely used on fiberglass pools, but be sure to read the label. Remember not to scrub hard with something that may scratch or rub off the gelcoat surface.
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