Best Cristal Ph Spar 2025

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Last Updated - 26.07.2025

Best Choice

01

Cristal

Cristal pH reducer minus granules 18 kg – effective pH regulation – easy to use and dosage – for material-friendly lowering of the pH value without causing corrosion

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9.8

Exceptional

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Top effect, easy to use: acidic reacting granules for pH lowering, easy to use and dosage, easy to solubility, gentle on materials. In contrast to hydrochloric acid, additionally prevents corrosion
Tip: measure your water values once or twice weekly with a water tester to correct the pH of your pool water.
Effective pH regulation: Cristal pH reducer (pH minus) in a practical 18 kg storage set for adjusting your pH value as the basis of your water care steps.
Easy to use: use a pool tester to determine the pH value. To reduce the pH value by 0.1, approx. 100 g pH reducer required per 10 m³ pool content.
Base of water care: the adjustment of the pH value between 7.0 and 7.4 forms the basis of all further care steps.

62,95 €
Value for Money

02

Cristal

CRISTAL pH Lifter & pH Reducer Set 11 kg - Complete Solution for Perfect Water Care - For Pools & Hot Tubs - Easy to Use

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9.7

Exceptional

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Main highlights

Suitable for pools and whirlpools: universal use for all types of pools and hot tubs - perfect for private applications.
Protection for technology and materials: prevents corrosion and limescale deposits and extends the life of your pool or whirlpool technology.
Highly effective formula: ensures a stable pH between 7.0 and 7.4 - ideal for clear and hygienic water.
Easy dosage: practical and user-friendly application for quick and effective water care.
Complete set for optimal water quality: contains pH lifter and pH reducer to precisely regulate the pH value of your pool or hot tub water.

41,95 €
03

Cristal

Cristal pH-Plus Granules 1 kg - Reliable pH Increase for Hot Tubs & Spas - Easy to Use - Highly Effective & Quick Dissolving

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9.6

Exceptional

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Stabilisation of the pH value through buffer effect: the alkaline reacting granules not only ensure the raising of the pH value, but also stabilises it by its buffer effect. This prevents large fluctuations in pH value, which ensures constant water quality.
REGULAR PH CONTROL FOR CLEAN POOL WATER - Check the pH of your pool 1-2 times weekly with a water tester to ensure the ideal pH range from 7.0 to 7.4. If necessary, the pH value can be easily corrected with our pH lifter.
Effective pH increase for pool water care: the Cristal pH Plus granules increase the pH value of your pool water quickly and reliably. The right pH balance ensures optimal water quality and is the basis for all further care steps, such as disinfection and algae prevention.
Easy to use and high material protection: our pH Plus granules are easy to dose and gentle on materials such as films and pool technology. It dissolves quickly, leaves no residue and is safe and comfortable to use.
Easy dosage and use: to increase the pH value by 0.1, you only need 100 g pH lifter per 10,000 litres of water. Ideal for pools of any size. Thanks to the quick solubility, the granules are evenly distributed in the water and are easy to use.
Compatible with all pool types and filter systems: Our Cristal pH Plus granules are suitable for all pool types, whether above ground pools, recessed pools or whirlpools, and is compatible with all filter systems. This makes water care particularly flexible and universally applicable.

10,95 €
04

Cristal

Cristal pH Minus Granules 1.5 kg – Effective pH Reduction for Hot Tubs & Spas – Easy Dosage – Highly Effective & Quick Dissolving

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9.5

Excellent

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Main highlights

Suitable for all pool and filter systems: our pH countersink is compatible with all pool types and filter systems. Whether in the above-ground pool, recessed pool or whirlpool - the pH reducer ensures clear and balanced water quality.
Prevents limescale deposits and protects pool technology: our pH countersink ensures an optimal pH between 7.0 and 7.4 to prevent limescale deposits and protect your pool technology. This keeps your pool in top condition.
Gentle and safe to use: the pH minus granules are gentle on the materials of your pool and leave no residue. Thanks to the easy solubility, it spreads evenly and ensures a quick effect.
FOR OPTIMAL WATER QUALITY: Check the pH value 1-2 times weekly with a water tester to ensure the pH remains within the ideal range. Use the pH countersink if necessary to reliably reduce the value.
Effective pH reduction: Cristal pH reducer (pH minus) lowers the pH value of your pool water reliably and quickly. A balanced pH value is the basis for optimal water care and prevents limescale deposits as well as skin and eye irritation.
Easy dosage and use: to reduce the pH value by 0.1, you need approx. 100 g pH reducer per 10,000 litres of water. Ideal for any pool size, dissolves quickly and is easy to use.

13,90 €
05

Cristal

Wasserpflege pH-Plus Granulat 5 kg

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9.3

Excellent

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Main highlights

pH value stabilization: the buffer effect of the granules stabilises the pH value in the long term and thus ensures an even water quality.
Tip for hard water: For hard water from 10° dH, we recommend adding the Cristal hardness stabiliser to prevent limescale precipitation and deposits and maximise the efficiency of the pH lifter.
Quick and effective: the easily soluble, alkaline reacting granules ensure a quick and effective lifting of the pH value. Ideal for maintaining an optimal pH of 7.0 - 7.4, which is the basis for all further care measures.
Material: the Cristal pH lifter is particularly gentle on materials and prevents corrosion, which increases the life of your pool system.
Easy to use: add the Cristal pH lifter portions directly into the pool water with the circulation pump running. To raise the pH by 0.1, dose 100 g of granules per 10 m³ of water. Check the pH value after complete dissolution and mixing of the granules.
Easy to use: Cristal pH lifter is characterised by easy handling and high chemical purity, which ensures easy and safe use.

21,95 €
06

Cristal

Cristal pH Countersink Granules 6 kg – Easy to Use – Quick Dissolving – For Stable pH Value – pH Minus – Optimisation as a Basis of Water Care

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9.0

Excellent

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Main highlights

REGULAR CONTROL FOR OPTIMAL WATER QUALITY: Check the pH value 1-2 times a week with a water tester to ensure the pH remains within the ideal range. Use the pH countersink if necessary to reliably reduce the value.
Prevents limescale deposits and protects pool technology: our pH countersink ensures an optimal pH between 7.0 and 7.4 to prevent limescale deposits and protect your pool technology. This keeps your pool in top condition.
Gentle and safe to use: the pH minus granules are gentle on the materials of your pool and leave no residue. Thanks to the easy solubility, it spreads evenly and ensures a quick effect.
Effective pH reduction for crystal clear pool water: Cristal pH reducer (pH minus) lowers the pH value of your pool water reliably and quickly. A balanced pH value is the basis for optimal water care and prevents limescale deposits as well as skin and eye irritation.
Easy dosage and use: to reduce the pH value by 0.1, you need approx. 100 g pH reducer per 10,000 litres of water. Ideal for any pool size, dissolves quickly and is easy to use.

25,95 €
07

Cristal

Cristal Clear Effect Turbidity Remover – For All Filter Types – Against Cloudy Pool Water – Improves Filtration – Easy to Use – For Crystal Clear Water in Pool & Whirlpool

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8.9

Very Good

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Main highlights

Universally applicable: suitable for fresh and salt water pools as well as for all common pool materials such as film, concrete or fibreglass – flexible and reliable in effect.
Safe and made in Germany: the label-free formula is developed and manufactured in Germany. The solution is residue-free and ensures safe, effective pool care.
EFFICIENT FILTER SUPPORT: The specially developed formula improves the performance of sand and cartridge filters, accelerates water clarification and noticeably increases filtration efficiency.
Crystal clear water: efficiently removes turbidity and the finest suspended solids. Ensures crystal clear water in pools and whirlpools, regardless of the filter system.
Comfortable dosage: add 10 ml per 10 m³ of water once a week. With a pH between 7.0 and 7.4, the product achieves the best effect. The filter system should run for at least 8 hours.

13,95 €
08

Cristal

Cristal Chlorine & pH Water Tester for Quick Water Analysis - Chlorine DPD 1 - pH Value Phenol Red - Manual Pool Tester with 6 Scale Values - Quick and Easy Includes Test Tablets

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8.6

Very Good

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Main highlights

Tip: The measurement of the water values should be done regularly, at least once a week. For optimal water care, pay attention to the correct pH value, this should be between 7.0 - 7.4 and is adjusted with the help of a pH lifter or pH reducer.
Optimal water quality: crystal clear water with the Cristal water tester including test tablets for measuring pH value and free chlorine.
Measuring accuracy: the tester with 6 scale values each, in combination with the DPD and phenol red tablets, offers a high measurement accuracy as well as safety and convenient handling for determining chlorine and pH values.
Easy to use: rinse the tester with water and fill it up to the 10 ml mark with pool water. Insert the respective tablet for pH or chlorine value, shake vigorously and read values.
Combination pack: you will receive a total of 20 test tablets DPD No. 1 for measuring free chlorine and 20 tablets of phenol red for pH determination.

10,95 €
09

Cristal

Cristal Pool Tester Chlorine pH Value 50x Test Strips for Water Analysis for Swimming Pool Whirlpool Easy to Use Quick and Reliable

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8.5

Good

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Main highlights

WEEKLY REVIEW: Recommended by experts: Check your water values at least once a week to ensure the quality of your swimming pool water.
DURABLE AND SAFE: Our test strips are durable until the printed expiry date when stored properly. Keep them cool, dry and out of reach of children.
Quick results: After another 10 seconds, you can also determine the value for the free chlorine by simply comparing colour - for a quick response to changes in pool water.
Precise water analysis: with our 2-in-1 test strips you can quickly and accurately measure the pH value and free chlorine content in your pool or hot tub.
Easy to use: dip the test strip into the water for 5 seconds, do not drain the excess and immediately determine the pH value by colour comparison.
Advanced recommendation: Pool Total even recommends 2-3 measurements per week to maintain optimal water quality and avoid unwanted problems.

13,00 €
10

Bayrol

Cristal Granules - 2 x 1.0 kg Active Oxygen Granules + 1 x 1.0 L Active Oxygen Activator - Mega Economy Set for Chlorine-Free Water Disinfection from the Pool

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8.4

Good

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Main highlights

Well-being: our water care provides special chlorine-free protection for skin and hair without pungent chlorine odour. The chlorine-free formula ensures that your eyes are no longer irritated - a clear plus for enjoyment in your pool.
Note: According to EC guidelines GefStoffV. Use biocidal products carefully. Always read the label and product information before use. BAuA Reg. No.: N-58499 & BAuA Reg. No: N-58498
Granulate: The Cristal active oxygen granules are part of the system care for swimming pool water based on active oxygen.
Gentle water care: our chlorine-free alternative ensures a gentle treatment of your pool water without sacrificing effectiveness.
First treatment: add 150 ml of Cristal active oxygen activator per 10 m³ directly into the water. Then add 200 g of Cristal active oxygen granules.
Additional dosage: 50 ml Cristal active oxygen activator per 10 m³ directly into the water. Then add 100 g of Cristal active oxygen granules.
Activator: enhances the effect of active oxygen granules. At the same time, this liquid activator is a foam-free algae repellent, which prevents algae growth.

41,95 €