Free chemistry calculators based on TFP/SLAM methodology
Calculate chlorine dosing based on your CYA level. Includes SLAM (Shock Level And Maintain) targets.
Calculate muriatic acid or soda ash needed to adjust your pool pH to the ideal range.
Calculate baking soda dosing to raise your Total Alkalinity (TA) and stabilize pH.
Calculate cyanuric acid dosing to protect your chlorine from UV sunlight degradation.
Calculate calcium chloride needed to raise CH and prevent plaster etching or liner damage.
Calculate how much salt to add to your salt water pool for your SWG system.
Customizable SLAM checklist for clearing algae. Add items, reorder, save, and print.
Customizable weekly tasks to keep your pool crystal clear. Add items, reorder, save, and print.
Customizable spring opening guide. Add items, reorder, save, and print.
Customizable winterizing guide. Add items, reorder, save, and print.
Keep your pool water balanced within these recommended ranges:
| Parameter | Ideal Range | Notes |
|---|---|---|
| Free Chlorine (FC) | Based on CYA | Keep FC/CYA ratio. Min FC = CYA รท 20 (rounded up) |
| pH | 7.4 - 7.6 | Affects chlorine effectiveness and comfort |
| Total Alkalinity (TA) | 60-80 ppm (SWG) / 80-120 ppm | Buffers pH; SWG pools run lower |
| Cyanuric Acid (CYA) | 30-50 ppm / 70-80 ppm (SWG) | Protects chlorine from sunlight |
| Calcium Hardness (CH) | 250-400 ppm (plaster) / 150-250 ppm (vinyl) | Prevents etching and liner damage |
| Salt (SWG only) | 3000-3500 ppm | Check your specific SWG manufacturer |
TFP (Trouble Free Pool) is a methodology for maintaining crystal clear pool water using the FC/CYA relationship chart instead of arbitrary "shock" levels. It emphasizes testing and adjusting based on actual water chemistry rather than guessing.
SLAM (Shock Level And Maintain) is the TFP process for clearing algae or cloudy water. You raise chlorine to "shock level" based on your CYA, then maintain it 24/7 until you pass three tests: clear water, zero CC, and overnight FC loss under 1 ppm.
These calculators use TFP methodology to give you accurate dosing based on your actual pool chemistry, not one-size-fits-all recommendations.
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