PoolDose: Chlorine & pH

Exact grams for your pool, never a vague instruction. No purchases anywhere. Tell it how big your pool is and which product you have. It gives you the exact grams. No vague "raise the pH": litres or millilitres of your brand, ready to pour.

THE WATER INDEX The Langelier Saturation Index tells you if the water will corrode or scale before you add anything, using temperature, pH, alkalinity, hardness and stabilizer: aggressive, balanced or scaling water, and what to fix first.

VOLUME DONE RIGHT Rectangular, oval, round, kidney or stepped-bottom pools, with the sloped bottom actually calculated instead of guessed from the deepest point.

COMPLETE DOSING Chlorine in its four forms (liquid sodium hypochlorite, calcium hypochlorite, trichlor and dichlor), pH+ and pH- (soda ash, sodium bisulfate or hydrochloric acid), alkalinity, calcium hardness, stabilizer, salt for a salt chlorinator, flocculant and algaecide. Always in grams or millilitres of the product sitting in your pump room.

LOG AND REMINDERS Weekly log with a ninety-day chart, multiple pools, testing reminders and CSV or PDF export. All included, no limits and no in-app purchases.

MAINTENANCE GUIDE The correct order to fix things (alkalinity, pH, chlorine and stabilizer) and the two safety rules that actually matter.

Values are orientative: always follow the manufacturer's label.

COMMON QUESTIONS Does it tell me how much to add, or just what is wrong? How much. Not "raise the pH" but the grams or millilitres of the product sitting in your pump room, for the volume you entered.

Does it know which chlorine I have? It handles all four forms — liquid sodium hypochlorite, calcium hypochlorite, trichlor and dichlor — because each has a different strength and a different side effect on stabiliser or hardness.

What is the water index for? The Langelier Saturation Index tells you, before you add anything, whether the water will corrode the surfaces or scale them, from temperature, pH, alkalinity, hardness and stabiliser — and what to fix first.

Is the volume just length by width by depth? No. Rectangular, oval, round, kidney and stepped-bottom pools are all there, and a sloped bottom is actually calculated instead of guessed from the deepest point.

Can I follow the numbers blindly? Treat them as orientative and follow the manufacturer's label, which wins every time. Fix things in the right order too — alkalinity, then pH, then chlorine, then stabiliser — or you will chase your own tail.

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