I have used Baquacil in this 24' round pool for 3 years and a previous 16X32 pool for more than 5 years with not much trouble at all.
The past couple of weeks the water has been hazy. Had it checked and all readings ok. Pool store just said add oxidizer. It didn't clear up very much. Today I added 3 lbs of water clarifier through the skimmer as directed and as soon as it was added the water turned dark brown. Coming in brown through the return. Could not see the bottom. I added 2 gallons of oxidizer and it turned green. Can see bottom but it's pretty green.
Sanitizer is on low end of range but I'm a little afraid to add anything else.
I see a lot of people convert to chlorine but I have a severe iron problem and even with iron out, metal magnet I get bad results with chlorine.
I have a sand filter.
Anyone have any idea what could be happening?