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Cleansol pH Down – pH Reducer Powder for Swimming Pool (pH Minus)
About this item
Cleansol pH Down is a dry acid pH reducer for swimming pools that brings high pH (7.8–8.4) back to the ideal 7.2–7.6. At high pH your chlorine becomes weak, the water turns cloudy, white scale forms on tiles and swimmers get red, itchy eyes. pH Down fixes the cause. It is a free-flowing powder – no acid fumes, no leaking cans – and comes with a 10 g scoop for easy dosing. Packs: 1 kg balti, 5 kg bucket and 25 kg bag.
Lowers high pH · 1 scoop (10 g) per 1,000 L ≈ −0.2 pH · No fumes · 12-month shelf life
Test → dissolve in a bucket → pour near the return jets → pump 4–6 hours → retest
Which one do I need?
| pH above 7.6 | Cleansol pH Down (this product) |
| pH below 7.2 | Cleansol pH Up |
| pH keeps jumping up and down | Cleansol Alkalinity Up (pH stabiliser) |
At a glance
| Product | Pool pH reducer / pH decreaser (dry acid, also called pH minus) |
| Form | White granular powder, dissolves in water |
| Dose | 10 g (1 scoop) per 1,000 L lowers pH by about 0.2 – max 30 g per 1,000 L at one time |
| Also | Lowers high total alkalinity (above 120 ppm) |
| Packs | 1 kg balti + scoop · 5 kg bucket + scoop · 25 kg bag |
| Shelf life | 12 months from manufacture, stored dry and closed |
Why pH matters
Chlorine only kills germs and algae well when pH is right. At pH 7.0 about 75% of your chlorine is in its strong, active form; at 7.5 about 50%; at 8.0 only about 20%; and at 8.5 just 10%. So at high pH you keep adding chlorine and the pool still turns green. High pH also makes calcium drop out as a white haze and scale, and irritates eyes and skin. Bringing pH back to 7.2–7.6 makes every rupee of chlorine work.
Dose chart – choose by your pH test
| Pool | Water | pH 7.8 | pH 8.0 | pH 8.2+ (max at once) |
| Plunge pool | 10,000 L | 100 g | 200 g | 300 g |
| Small home pool | 25,000 L | 250 g | 500 g | 750 g |
| Villa pool | 50,000 L | 500 g | 1 kg | 1.5 kg |
| Society pool | 1,00,000 L | 1 kg | 2 kg | 3 kg |
| Hotel pool | 2,00,000 L | 2 kg | 4 kg | 6 kg |
1 scoop = 10 g. Pool volume (L) = length × width × average depth (m) × 1,000. Alkalinity above 150 ppm makes pH bounce back – repeat the next day and retest.
How to use
- Test pH (and alkalinity if you can). Use pH Down only when pH is above 7.6.
- Measure the dose from the chart – 1 scoop per 1,000 L for every 0.2 pH.
- Dissolve in a plastic bucket of pool water. Add powder to water – never water to powder.
- Pour slowly in front of the return jets with the pump running.
- Circulate 4–6 hours. Swimming is fine after about 1 hour of mixing.
- Retest and repeat if needed. Add chlorine at a different time, not together.
Dry acid powder vs liquid pool acid
| Liquid pool acid | Cleansol pH Down powder | |
| Fumes | Strong acid fumes when opened | No fumes |
| Storage | Outdoors, well ventilated | Indoors, dry shelf |
| Spills | Burns floors, rusts metal | Sweep up dry powder |
| Leaks in transit | Can leak from the cap | Sealed balti / bag |
| Measuring | Measuring jug, splash risk | Scoop – 10 g each |
Honest strength guide: liquid acid is stronger per litre. About 1.3 kg of pH Down powder does the job of 1 litre of 31–33% liquid pool acid.
Choose your pack
| 1 kg balti + scoop | Small home pools, spas and fountains – about 100 scoops |
| 5 kg bucket + scoop | Villa and society pools – best value for regular use |
| 25 kg bag | Hotels, clubs and pool contractors – bulk supply, shipping charged by PIN code |
Pool still green or cloudy?
High pH is one of the top reasons. Follow the step-by-step rescue guide.
Safety & storage
- Causes serious eye damage. Wear gloves and safety glasses. In eyes, rinse with clean water for 15 minutes and see a doctor.
- Never mix with chlorine products (TCCA granules, liquid chlorine) – add them hours apart.
- Add powder to water, never water to powder. Use a plastic bucket, not metal.
- Keep the lid tightly closed and dry, in a cool place, out of reach of children.
Frequently asked questions
What is the ideal pH for a swimming pool?
7.2 to 7.6. Test 2–3 times a week. Use pH Down above 7.6 and Cleansol pH Up below 7.2.
How much pH Down do I add?
1 scoop (10 g) per 1,000 litres lowers pH by about 0.2. A 50,000 L pool at pH 8.0 needs about 1 kg (100 scoops). Never add more than 30 g per 1,000 L at one time.
Why does my pool pH keep going up?
Usually high total alkalinity, fresh plaster, or a lot of splashing and aeration. Liquid chlorine (sodium hypochlorite) also raises pH a little. pH Down lowers alkalinity too – bring it to 80–120 ppm and pH will stay steadier.
How do I lower pH and alkalinity together?
Add pH Down in one spot in front of a return jet with the pump on, repeat over 2–3 days, and retest. Then aerate (fountains, jets) to lift pH back up without raising alkalinity.
Can I swim after adding pH Down?
Yes, after about 1 hour of pump mixing, once the powder has fully dissolved.
Can I add pH Down and chlorine together?
No. Never mix them in a bucket or add them at the same moment. Add pH Down first, wait a few hours, then add chlorine.
Is it the same as liquid pool acid?
It does the same job – lowers pH and alkalinity – but as a dry powder with no fumes and no leaking cans. About 1.3 kg of powder equals 1 litre of 31–33% liquid acid.
How long does it last in storage?
12 months from manufacture, kept dry and tightly closed.
Do you supply in bulk?
Yes – 25 kg bags and regular supply with GST invoice. WhatsApp 98290 05860 for bulk prices.
Pool pH reducer (dry acid, pH minus) for swimming pools, spas and fountains. Dosing information is general guidance; always test the water and follow local regulations. For bulk queries, email info@cleansol.in.
Prefer road transport? For orders of 25 kg and above, tick Send by road transport (to-pay) in the cart and add your transporter’s name and number. You pay the freight to the transporter on delivery.
Dispatched in 1–2 working days from Jodhpur. Delivery across India.
In stock
GST invoice with every order
- Ships from
- Cleansol, Jodhpur
- Sold by
- Cleansol (manufacturer)
- Invoice
- GST invoice provided
For hotels, offices & institutions
Buying in bulk for your business?
Special rates on 5 L, 25 L and carton quantities for housekeeping, hotels, hospitals and schools, with GST invoice.
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- 1Share product & quantity
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Specifications
| Packing / variants | 1 kg, 5 kg, 25 kg |
|---|
Safety & first aid
Keep out of reach of children and pets. Do not mix with other cleaners, especially bleach and acid-based products. Avoid contact with eyes; if it happens, rinse with plenty of clean water.
Test on a small hidden area first. Close the cap after use and store in a cool, dry place away from direct sunlight.