I have had a problem with what I thought was sand on the bottom of my pool since the end of last swimming season.
So this spring we bought new sand from a pool place and we replaced the sand in the sand filter. We checked the laterals and they seemed fine. Sand (?) has still been coming back into the pool daily after the filter is turned back on. I cannot see it coming out of the return but after the filter being on for a short while, the brownish stuff is lying in the creases of the pool.
SO,..I am vacuuming daily. I did buy a pool rover jr this summer which I really like. At times I have not cleaned the filter bag right after removing it from the pool and the brownish colored stuff on the inside of the bag does not really have a sand like consistency. It is just brownish discoloration on the bag walls. I have backwashed my filter, doesn't help. I am wondering what to do now.
I check my water pretty much daily. I have an inline chlorinator and my levels lately have been 10+ for both free and total chlorine. I am using aquacheck select strips.
My hardness is 250, ph a little low at about 6.2 to 6.8, alkalinity 120 and cya 30-50. Using Triclor, I think for chlorine.
Any ideas? Help!