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Calcium hypochlorite has a solubility of 210 grams per liter. For most communities a 20 liter bucket will be sufficient, but as a rule of thumb I think I would be appropriate to implement the policy that states; if you are having a precipitation problem, then the initial settling in a separate container, should be split into two containers if a the container being used is a 20 liter bucket. The total weight of Ca(ClO)2 needed for the 55 gallon drum 220 liter stock tank is split in two and placed into two separate 20 liter buckets and then mixed with water and allowed to settle. Alternitally, The total weight of Ca(ClO)2 needed for the 220 liter stock tank could be placed in a 20 liter bucket and mixed with water and allowed to settle. Then the supernatant could be removed and another 20 liters of water would be added to the bucket now containing the settled CaCO3 and any residual Ca(ClO)2. This solution would be mixed and allowed to settle again. Last, the second volume of supernatant would be removed and mixed with the first volume.

We would prefer that buckets full of concentrated Ca(ClO)2 were not sitting around unattended for days. We recommend that the plant operators add the weight of Ca(ClO)2 needed to achieve a desired concentration of solution in a 220 liter drum in a 20 liter bucker and let the CaCO3 that precipitates out of solution settle for 30 minutes. Next filter the solution while pouring it into the 220 liter drum through a piece of cotton cloth like a tee-shirt. This tee-shirt can be washed off with clean water and reused.

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