The above posts contain very good information. Calcium Hypochlorite (pool shock) is fantastic to have available because it doesn't degrade over time like regular bleach. However, if you are obtaining your water from a municipal water supply and not a well, you don't really need to add anything to it as it is already chlorinated. Just change it out every 6 months to a year (I do a year).
A word about pool shock. Make sure you don't buy shock with addititives like algaecides, etc. You want straight calcium hypochlorite. Also be careful how you store it. It will cause metals to rust and it can give off some nasty fumes. I leave mine in my shed.
A word about pool shock. Make sure you don't buy shock with addititives like algaecides, etc. You want straight calcium hypochlorite. Also be careful how you store it. It will cause metals to rust and it can give off some nasty fumes. I leave mine in my shed.
