FAQs

EN
Every outdoor and indoor swimming pool should be completely emptied and cleaned at least once a year.
Never empty the swimming pool when the groundwater table is higher than the bottom of the pool. The pressure of the groundwater can cause cracks in the body of the pool to appear, or the swimming pool can float and damage the piping system.
The easiest way is to detect an excessively high level of groundwater in a technical equipment compartment above the drain recess in the base plate. If the groundwater level is too high during emptying, stop the procedure at once and immediately refill the pool with water to generate counterpressure.
The pool floor of empty pools can buckle due to temperate effects. This is normally no reason for concern because the pool floor will cling to the base plate once it has been refilled.
The pool can be emptied directly through the bottom drain by letting the water flow out freely, indirectly through the bottom drain with a filter pump, or with a submersible pump (recommended).
When emptying the pool, use a brush to clean large patches of dirt on the walls and bottom of the pool.
Treat limescale and metallic sediments with an acidic pool cleaner. Soot and fat deposits can be removed with alkaline cleaning agents. Depending on the cleaning product, they can be applied either undiluted or diluted with a spray bottle on the wet walls and floor and washed off after being allowed to work for a period of time. It is advisable to wear rubber gloves and boots when performing such tasks! Always follow the instructions for use on the cleaning products!

Further care tips:
The complete cleaning of the empty pool can be performed with acidic cleaning agents which also remove limescale.
Do not use abrasive sponges or detergents as they can scratch the pool surfaces.
After thorough cleaning, the pool surfaces can also be sealed with a special polish. “Poolfinish” removes the last bits of dirt and seals the pores of the surface.
When the pool is in use, remove dirt from the edges above the surface of the water only with a special rim cleaner, otherwise you will interfere with the filtration system.
Always follow the instructions for use and safety information provided by the manufacturer of the cleaning product.
pH regulation is the first step to healthy and skin-friendly swimming pool water. Keeping to the correct pH at all times is important for all further maintenance steps. You can monitor this very easily with pool water testing tablets: if the pH value is between 7.0 and 7.6 then everything is fine and you can relax and enjoy your LEIDENFROST pool. Water treatment products deliver the best results and protect the acid mantle of the skin. If the pH value is incorrect, problems such as the following can occur:
When the pH value is too low:
Aggressive water, metal corrosion, attack on fine layers, skin irritation, eye irritation, odours caused by the formation of chloramines (combined chlorine)
When the pH value is too high:
Decrease in the disinfectant effect of chlorine, cloudy water, lime precipitation, adhesion of the filter material, destruction of the skin’s natural acid
mantle.
In the first few weeks after filling the pool, the pH value should be checked at least 3 times per week. After the correct level has been reached, check it once a week.
To guarantee good water quality and a high standard of hygiene in the pool, the pool water must be continually disinfected. The water must not contain any harmful bacteria, fungi or viruses. These elements can be removed through the use of suitable chemicals. The most effective disinfectant is chlorine and its compounds.
free chlorine: ideally 0.3 - 0.5 mg/l Cl2.
free chlorine: max. 1.0 mg/l Cl2.
combined chlorine: max. 0.2 mg/l Cl2.
Besides chlorine, active oxygen is also suitable for water treatment. The handling and metering of water treatment products must be performed in compliance with the limits specified by the manufacturer in the instructions for use.
A clean filter is a prerequisite for enjoying endless fun in the pool. Sand filter material should normally be changed every 4-5 years. AFM filters should be changed every 8-10 years.
Cartridge filters should be cleaned once a month. Change the cartridges every 4-5 years, depending on how dirty they are.
Regular maintenance and cleaning should be carried out in accordance with the manufacturer’s operating instructions.
To permanently avoid the growth of algae and the resulting “green water”, you will need a course of prevention that contains algaecides. In general, you should know that algaecides work preventively and only work when the water contains the right amount of algaecide. This can only be guaranteed if the concentration in the product is correct. The correct amount of algaecide also means that it is regularly replenished. Highly efficient algaecides that are free of heavy metals are available on the market and are excellent at combating the growth of algae. We recommend the use of foam-free products for pools with counter-current systems.
Either the pH value is too low or an acidic cleaner has been used. If an acidic cleaner has been used when cleaning the pool, immediately rinse the stainless steel fittings with water!

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