This is our first spring with the pool and our first season with the SWG plugged in. When we first put salt in about a month ago I had the SWG set to 85% and the FC was creeping up steadily too high. Right now I have 65CYA and am aiming for 8FC. FC was getting up to 10 and still climbing so I reduced the SWG down to 15% to let it drop and then brought it up to 50% once it did. About the same time, we started getting very heavy pollen, lots of rain and quite a bit of wind. But now at 50%, the FC keeps dropping down to 6.5. I'll throw in some liquid chlorine to bring it to 8 and the next morning it will be at 7.8 and by the end of the day even more lose. It's not keeping up. Today I just raised it up to 85% again, but I don't know what's going on. The water is VERY clear, but the the skimmer sock keeps filling up with what I think is pollen (lots of it, even within an hour of changing it's almost full again).
It also seems like the SWG salt level reading has been going down as well. At one point it read 3200, but went back down to 2900. I threw in another 40lb bag (I forgot to turn the SWG off that time) and it brought it up, but it's back down at 2900. I haven't done a manual salt test in a while, so I don't know what it really is. We have an over flow pipe and it's possible that heavy rain reduces it. There was some serious rainfall the last week or so.
I guess my question is: Can pollen and wind do this kind of thing with FC?
It also seems like the SWG salt level reading has been going down as well. At one point it read 3200, but went back down to 2900. I threw in another 40lb bag (I forgot to turn the SWG off that time) and it brought it up, but it's back down at 2900. I haven't done a manual salt test in a while, so I don't know what it really is. We have an over flow pipe and it's possible that heavy rain reduces it. There was some serious rainfall the last week or so.
I guess my question is: Can pollen and wind do this kind of thing with FC?