Based on 10,000 gallons
Carbonate scale is the consequence of water being over-saturated with calcium carbonate. This is measured in the saturation index (LSI). The scale begins to form when the LSI is above +0.30. To remedy, the LSI needs to be placed in a safe, but the slightly negative place (-0.30 to -0.01), to allow for the calcium to be brought back into solution.
Scale, especially on tile lines, is often compounded by organic waste that makes it difficult to clean off. We recommend a combination of both SC-1000 for the calcium and CV-600 for the organics.
- Raise the water level and/or turn on water features to soak the scaled area(s).
- Test the water chemistry, and input into the Orenda App under “current levels”.
- On the right side of the calculator (desired levels), adjust the pH to 7.2-7.4, and find a way to get the LSI between -0.30 and -0.01. The LSI number should be yellow.
- Add the prescribed amount of muriatic acid, pre-diluted in a bucket of water and poured evenly around the perimeter of the pool.
- Add one quart (32 Fl.oz.) of CV-600 or CV-700 directly into the skimmer.
- Add one quart (32 Fl.oz.) of SC-1000 directly into the skimmer.
- Add chlorine, as SC-1000 will have depleted chlorine levels with the initial dose.
- If scale is still present, rub it with your fingers to see if it has softened or loosened. Brush and clean physically, avoiding abrasive tools that can scratch tile, etc.
- Re-test the water chemistry each visit, and document the results in the Orenda App.
- pH tends to rise on salt generated chlorine pools, as well as when water features aerate the water.
- Adjust the water chemistry to be back in the yellow LSI range of -0.30 to -0.01.
- Apply maintenance doses of both CV-600 (5 Fl.oz./10,000 gallons) and SC-1000 (3 Fl.oz./10,000 gallons) directly into the skimmer.
- Add chlorine, as SC-1000 may have still impacted the levels.
- Maintenance SC-1000 dosing should not impact chlorine levels noticeably.
- Repeat the process on each visit until the scale has been removed.
This process generally takes 2-3 weeks. SC-1000 gently breaks down the carbonate scale, unlike acid. It needs time, and the water must be maintained in a slightly-negative LSI state to dissolve the calcium. Always measure doses of chemicals and use proper safety gear.