I have been having problems with cyano bacteria. My phosphates are .5 and I am having problems getting rid of them. I use DI water from AW and I have asked them several times about their water quality. They continue to say it is DI water nothing is in it. I did a phosphate test on it tonight and it appears to have >.5 reading of phosphate. I will confirm this in the morning.
Has anyone else checked their AW water for phosphates???