green water that won't go away

[waterbear]

Do NOT shock the pool until you treat the metals! High chlorine levels will cause the metals in the water to oxidize and color the water! It can also cause staining. This is probably part of your green/brown water. Since it is cloudy there probably is some algae growing also. First treat the metals with a sequesterant according to the label directions! Adust your pool to the pH and CL levels the equesterant recommends before using it for best results. When the water no longer tests postive for metals then treat the algae. You mentioned that your water is very hard. What is the calcium hardness. Very high levels can sometimes cause cloudy water under certain conditions.