How To Remove Lime Scale Deposits From A Pool

You don’t always need to empty your pool to remove lime deposits, and luckily for that matter! However, this unsightly scale must be removed because it also represents a real scourge for the swimming pool. Let’s find out what are the best solutions to eliminate these lime deposits that clump together on the bottom and walls of the pool, but also how to prevent the pool from scaling in the future.

Why Eliminate Lime Scale Deposits In A Pool

Scaling in the swimming pool is caused by limestone, or more precisely either by calcium silicate or by calcium carbonate . Deposits are more or less important depending on the region in which the pool intended for swimming is located since it depends on the hardness of the water. The more important it is, the more the risk of deposit increases.

But limestone also settles in case of: pH variation (hydrogen potential), Variation of the TAC (Complete Alkalimetric Title), Increase in the temperature of the swimming pool water.

Pool scale build-up is easy to spot since light gray (calcium silicate) to whitish (calcium carbonate) scaly stripes or spots appear on the walls and bottom. You can even usually find it on the edges of the swimming pool. They are also recognizable by touch. Indeed, by passing the hand over the scaled wall of the swimming pool, one easily perceives their roughness . Worse still, if we do not act against the limestone, it ends up clogging the various equipment of the pool which includes the filtration system, but it can also concern the piping . If you do not act quickly, the limestone causes irrevocable degradation.

What Type Of Lime Scale Is Invading My Pool

Many deposits can make bathing water unsafe. To ensure that it is indeed limestone, you can take a small amount and then add a few drops of muriatic acid . If a foam forms, it is because there is a deposit of calcium carbonate . If no chemical reaction takes place, we are faced with calcium silicate deposits .

Obviously, you do not treat your swimming pool with hydrochloric acid because the smell it gives off is really unpleasant and this product is dangerous for the users of the swimming pool. Beware of sulfuric acid or nitric acid also that some people recommend for descaling a swimming pool. In high doses, these ultra-concentrated products are corrosive . Rather than relying on messages found in forums, it is better to seek advice from a pool specialist.

How To Remove Lime Scale Deposits From A Pool

When you notice lime deposits on the walls of the pool, they must be removed by using a powerful descaling agent for swimming pools. It is necessary to place it on the stains and to let act during the time indicated by the supplier. Then, the walls must be rubbed using a suitable brush until the deposits have completely disappeared. The session ends with a careful cleaning which requires the use of a stick vacuum or a pool robot. The swimming pool descaler has the advantage of eliminating traces of rust at the same time.

Here are some other recommended solutions if you do not want to empty your pool.

A special eraser, a pumice stone or a small brush are useful for removing calcium carbonate deposits. We understand that elbow grease is necessary, but ultimately we get good results without too much trouble because these deposits are generally not too recalcitrant.

A pumice stone can be used to remove calcium silicate deposits, but the task is arduous and time consuming, as the silicate is very difficult to remove. In addition, descaling products do not quickly take effect on the extremely tough silicate. The intervention of a professional is essential.

In some cases, it is essential to completely empty the pool to clean it from top to bottom and remove even the slightest trace of lime. A sander may be necessary.

How To Prevent Lime Scale From Forming In A Pool

A preventive treatment against limescale must be used regularly to protect your swimming pool. And to limit the risk of scaling in the pool, it is essential to check the TAC and the pH of the water very regularly . Let’s not forget that TAC and pH are intimately related, and if one varies, the other also varies. When the first is too high, the second is too high and vice versa. We therefore first adjust the TAC and then correct the pH. The water in the swimming pool must be perfectly balanced so that we do not suffer the inconvenience associated with lime deposits on the walls of the pool.

In any event, it is strongly recommended to call in a specialist such as the pool specialist for an inspection of the pool to obtain a serious diagnosis . This professional can identify the type of limescale that forms the pool and, in addition, carry out an appropriate treatment to remove all deposits.