The ankh is an ancient Egyptian symbol. It looks rather like a key. The ankh symbol was used in hieroglyphics and in designs. One of the artifacts carefully placed in King Tut's tomb was an ankh. The ankh must have meant something important to the ancient Egyptians, but we're not sure quite what that was.
You may want to look at my article HERE on lowering stabilizer. Basically if you use chlorine tablets, they have stabilizer in them and over time, can over stabilize the pool water and will need to be diluted. Also calcium levels that are high, rainfall can be a benefit to diluting the water as well.
Stabilizer â UV protection for your chlorine: 1  Without the use of a stabilizer, chlorine in your pool would be destroyed very quickly by the UV rays from the sun. 2  Bromine pools can benefit from the use of stabilizer and stabilizer is only required in outdoor pools where UV rays can come in direct contact with the water. Without the use of a stabilizer, chlorine in your pool would be destroyed very quickly by the UV rays from the sun. 2  This would make maintaining recommended levels of chlorine (1-3 ppm for pools, 3-5 ppm for spas) very difficult, costly and a sanitation hazard to bathers.