Bens Chart

[Rangeball]

Higher stabilizer levels bind up chlorine, preventing it from working as effectively, leading the a higher reading to get the same effect as the range you suggested.

Basically, even though the suggested ranges are higher, they all have the same working ability.

[mas985]

Green hair is caused from copper in the water. Burning eyes is caused from chlorimines, used up chlorine that must be converted back to chlorine with higher levels. I suggest reading throught the tips on Ben's other site for more information about pools:

www.poolsolutions.com