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.
Both salt systems and chlorine tablets are affected by water balance, temperature, sunlight and the amount of bather waste and organic contaminants it contends with. Cyanuric acid, or stabilizer is needed with both systems, to protect chlorine from the sun. Tablets and salt generators produce the same thing - hypochlorous acid. In terms of efficiency of your time, using tablets and shock will probably take more time, although probably not by much.