What do you keep your levels at for them to be 'high'???
Do you mean you keep it to the top of your range taking into consideration your CYA, or do you keep it above that number but under the number for shock?
Like if your CL range for your CYA is 4-8 and it's 12 for shock, do you take yours to 8 to get the stains to subside, or do you take it up to somewhere between 8 and 12?