First full test, looking for feedback

[ddjax]

Just finished our first pool. Fill date was Nov 17. Up to now the PB has been handling the water testing and maint. but now I'm on my own so I just completed my first full test using my new TF100 kit. Hopefully I did everything correctly. Here are my readings...
PH 8
FC 4
CC 0
TC 4
CH 400
TA 100
CYA <20 (Note: I have not added CYA and I'm not sure if the PB did at start up so this number seems like it might be suspect?)

After reading the various info here, it looks like the PH and the TA are a bit high but I'd love any feedback from folks more experienced than myself. PB info says to add 1-2 cups of muratic acid to lower the PH, is this correct? Also, do I need to add CYA during the winter months? The chlorine levels have been fairly steady over the past week or so. I'm in North Florida. Air temp during my tests today was about 52. Water temp 64 which is about where it's been since right after it was filled. Pretty sure it ain't getting any warmer until spring Looking forward to learning more but in the meantime any advice is appreciated. Thanks.

 

[pooldv]

Yes, lower ph to 7.6 when it gets to 8.0. It is important to keep your pH at 7.8 or lower to prevent scaling. You are going to want your TA between 50 and 60 to help reduce pH rise. Here is how to lower it, Pool School - Lower Total Alkalinity

More here about scale, Pool School - Calcium Scaling

More here about water balance for a saltwater pool. Pool School - Water Balance for SWGs

 

[MarianParoo]

To calculate how much MA to add, you can use PoolMath. Here is a tutorial on how to use it:

Pool School - PoolMath

 

[woodyp]

Just be advised that your water temps are getting to the point (usually 60), that your SWG will no longer produce FC for you. We also recommend a CYA level of 70 to 80 for pools with SWG as well.

 

[ddjax]

Just be advised that your water temps are getting to the point (usually 60), that your SWG will no longer produce FC for you. We also recommend a CYA level of 70 to 80 for pools with SWG as well.

Thanks. So once the water gets colder and the SWG stops generating FC, will I need to add chlorine another way or do you generally not need it for water that cold?

 

[woodyp]

FC consumption drops like a rock in the winter but still has to be maintained. We recommend plain liquid bleach, but at this point you could use a floater of 3" tabs to add CYA as well with yours being low for using a SWG.

 

[pooldv]

If you add a floater with trichlor pucks keep an eye on pH and TA as pucks will lower both. I usually switch to bleach when the water gets into the 60s.