Through the use of coral in gold several diseases can be warded off, particularly tropical fevers, chicken pox, jaundice, fistula, impotency and ailments pertaining to blood, particularly impure blood.
The goal of shocking your pool is to raise the free chlorine level of your pool water to roughly 10 times the combined chlorine level of your pool water.
SLAM - Shock Level And Maintain. SLAMing your pool is the best way to eliminate algae, sanitize your pool and get your water crystal clear. If you have algae, or the CC level is above 0.5, or the free chlorine (FC) level is zero, you should SLAM the pool. You cannot do this overnight...it often takes several days to see it completed...no shortcuts.