brown, green pool

[vwb1975]

i have an AG with a sand filter. the gallon size is 14000. i have been using the bleach calc, and have been testing daily. but i have brownish green water. i have used metal out. didn't seem to help. here are my test results as of this morning.
TA=200
PH=8.0
CL=5.0
CYA= 10
i put in some algecide and now i have brown foam on the top of the water. i drained it about a quarter of the way and refilled it. i have well water. i took a sample to the pool store and the iron and copper were normal. i have been vacuming to waste and brushing the sides. it has been five days and there is no change. any info as to what might be the problem?

[vwb1975]

today after adding 3 gallons of bleach, and brought the ph down to 6.8, the foam started to subside and i noticed white clumps on top. but, it looks like dirty water is comming in through the return jet. i have backwashed it earlier. i can post a pic if that will help with the suggestions. Tomorrow i plan on taking a look at the sand in the filter. i noticed that when i was backwashing, there was alot of sand in the looking glass. is that normal?

[aylad]

There is no "normal" range for iron and copper. Do you mean they are zero? Or do you have one or both in your water? If so, I strongly encourage you to go to the "metals" forum and read through everything you can there, especially any post made by mbar (Marie) who is one of the resident experts on metals in the water around this forum. I see that you have high pH and Cl (for a CYA of 10), and I believe those are two things that adversely affect your attempts to use the metal sequestrant.

Janet