Hi guys. I have tried to test the CYA a few times with my TF-100 kit. I can ALWAYS see the black dot in the bottom of the tet tube and I KNOW thre is CYA in my pool.
I have done this test after the CYA has been in there for at least a week. Furthermore I know there is CYA because the chlorine is holding. What am I doing wrong ?
I have done this test after the CYA has been in there for at least a week. Furthermore I know there is CYA because the chlorine is holding. What am I doing wrong ?