Saturation Index

[waterbear]

In real life situations [real pools and spas] people put too much empahsis on the saturation index when the time would be better spent keeping close tabs on sanitizer levels and pH and acutally enjoying being in the water! My feeling is if you keep the pH in line (NOT letting it get out of range and THEN correcting it but keeping it fairly constant) and your other numbers are good you should not have any problems.
Just my 2 cents.

[waste]

And worth both pennies, IMO (Tempted to add more, but there's already a thread on the indecies in the China Shop)