Rough, sandy stuff on my liner

[Watermom]

Your chlorine numbers don't appear to be accurate. FC + CC = TC always. When you say CL, what do you mean? TC? If it is your TC reading, I doubt you have a combined chlorine (CC) reading of 5. We also need a CYA reading. Retest and repost those numbers and somebody here can help further.

[Pamsel]

Oh, Watermom, you're right - I was in a hurry and posted inaccurately. Thanks! I just had seen the responses from over the weekend and was hurrying off to someone waiting for me and wanting to get a reply done before I ran off again. The correct numbers were FC 6 and CC <1

Here's my numbers tonight:

CL 0 - this is because I had to let it drop below 2ppm yesterday before adding the "Stain Magnet" last night.
TA 140
CAL 180
PH 7.5 - I had also dropped this to 7.2 yesterday, but it's back up to 7.5 tonight
CYA 36

Hope this helps to figure things out. Thanks!