
Pool pH Regulator Combo — 1L (Pack of 2)
Pool Drop and Pool Build together - the two bottles that hold pool pH at 7.2-7.6 whichever way the water has drifted.
above ₹499
across India
PRODUCT DESCRIPTION
The pH regulator combo pairs Chemtex Pool Drop (pH reducer) with Chemtex Pool Build (alkalinity increaser), 1 litre of each. Pool pH does not drift in one direction - rain, fresh fill water, bather load and chlorine dosing all push it around - so a pool that can only be corrected downwards is a pool that spends half the season out of range.
The target band is pH 7.2 to 7.6. Below it, water stings and slowly corrodes ladders, handrails and pump internals. Above it, scale forms on tiles and heater elements and chlorine loses much of its disinfecting power, so the dose you paid for stops working. Dose from the tested pH, per 50,000 litres of water. To bring pH down: 400 ml at pH 7.6-7.8, 500 ml at 7.8-8.0, 800 ml above 8.0. To bring it up: 450 ml at pH 7.0-7.2, 575 ml at 6.8-7.0, 700 ml at 6.5-6.7. Divide by five for a 10,000-litre pool.
Both are non-corrosive liquids, compatible with every type of pool filter and fitting, and cause no eye or skin irritation at dosing strength. Keep swimmers out for an hour after either, then re-test and correct in small steps rather than one large one.
FEATURES & BENEFITS
- Corrects pH in both directions — Pool pH drifts up and down through a season. One bottle can only fix half of that, which is why pools stay out of range.
- Dosing tables for both — Read the dose straight off the tested pH: 400-800 ml per 50,000 L to lower it, 450-700 ml per 50,000 L to raise it.
- Keeps chlorine working — At pH 8.2 a chlorine dose does a fraction of the disinfection it was meant to. Holding 7.2-7.6 is what makes the rest of your dosing worth paying for.
- Non-corrosive — Neither product attacks ladders, handrails, light housings, heat exchangers or filter internals the way neat acid does.
- Cheaper than buying both separately — The pair costs less than the two 1-litre bottles bought on their own, and covers a full season on a residential pool.
HOW TO USE
- Test the water first — Use a pool test kit or strips before dosing. Dosing blind is how pools end up over-corrected, and a correction in the wrong direction costs a day of swimming.
- Work out your pool volume — Length (m) × width (m) × average depth (m) × 1,000 = volume in litres. A 10 m × 5 m pool averaging 1.4 m deep holds 70,000 litres. Every dose below is per litre of pool water, so this number is the only one you need.
- If pH is high, use Pool Drop — Per 50,000 litres: 400 ml at pH 7.6-7.8, 500 ml at 7.8-8.0, 800 ml above 8.0. A 10,000-litre pool needs a fifth of these.
- If pH is low, use Pool Build — Per 50,000 litres: 450 ml at pH 7.0-7.2, 575 ml at 6.8-7.0, 700 ml at 6.5-6.7. Check total alkalinity is under 120 ppm before dosing.
- Dose, wait an hour, re-test — Pour along the periphery with the filtration running. Keep swimmers out for an hour, re-test, and correct again in a small step if needed.


