Why Use a BBB Chlorine Calculator
BBB pool care uses bleach, baking soda, and borax. The chlorine part is usually handled with liquid bleach or liquid pool sanitizer. This calculator focuses on that dose. It estimates how much product raises free chlorine from a tested level to a chosen target.
Good dosing starts with pool volume. A small volume error changes every chemical result. The tool accepts direct gallons. It can also estimate volume from common pool shapes. Average depth is used when the floor slopes. Always retest after circulation.
What This Tool Estimates
The calculator finds the free chlorine increase needed. It then converts that increase into a liquid or dry product amount. Liquid results use fluid ounces, gallons, jugs, and cost. Dry results use pounds, ounces, and cost. It also estimates a daily maintenance amount from your expected chlorine loss.
The CYA field helps you review context. Stabilizer protects chlorine from sunlight. High stabilizer can require a higher target. This page does not replace a proper test kit. It gives a practical planning value.
Safe Pool Planning
Add chemicals slowly. Pour liquid chlorine in front of a return jet. Keep the pump running. Brush areas with poor flow. Never mix products together. Store bleach away from acid and metals. Use gloves and eye protection.
Pool demand changes with sun, rain, swimmers, leaves, and algae. Cloudy water may consume chlorine quickly. A calculated dose may disappear if the pool has hidden contamination. Retesting is the best check.
The example table shows typical planning cases. It is not a universal prescription. Pool surfaces, sunlight, cover use, and water age matter. When readings disagree, trust fresh testing. Clean filters, remove debris, and solve algae before expecting normal daily chlorine loss again soon safely.
Using the Results
The result panel shows the dose, expected rise, estimated cost, and maintenance dose. It also gives a simple note for the chosen source. Use the CSV button for logs. Use the PDF button for a printable record. Keep these records with test dates.
Treat the dose as a starting point. Add less when unsure. Wait for circulation. Test again. Then make the next adjustment. This careful routine prevents overshooting and keeps the water more stable.