First chemical test results!

[SerenityIV]

Hello folks!

After refilling to bring my CYA level down, here are my first results after a couple of days through the filter.

FC: 7.5
CC: 1.5
pH: 7.8
TA: 140
CH: 275
CYA: 35

Any advice and guidance is greatly appreciated it. My FC does not seem to be coming down. I added 1.5 quarts of 12% bleach yesterday and did not add any today because it does not seem to be dropping much. Thanks in advance! (using TF-100 kit). Rest of info in sig

 

[Msch99]

Not an expert, but looking pretty good!

FC will come down.

Round your cya to 40 and use that for your FC target.

When PH gets a tad higher, 7.9 or 8, add muriatic acid to lower to around 7.2 or so. Use pool math to calculate amount, this will also lower your TA a bit.

 

[Msch99]

Missed the cc. Keep eye on it. Working on organics of some kind. Pool cover on? If so need to take off occasionally to let sun burn off cc. (Burn off not techie term lol, but how I look at it.)

 

[SerenityIV]

Excellent! I was concerned about my TA and CC. It's been rainy and cloudy the last couple of days here in Orlando, FL. I'm thinking lack of sun. Wasn't sure if I had to SLAM yet based on that CC.

 

[Msch99]

So after a year here I just found out that cc doesn't indicate algae, only organics if some kind. Lotions, debris etc.

Over night FC loss does though. 2 main things that lower FC, uv rays and algae...and?

Check out OCLT in pool school.
?

 

[SerenityIV]

Awesome, will do! Appreciate the help greatly!

 

[bmoreswim]

Agreed that I would perform an Overnight Chlorine Loss Test for the CC level.

 

[SerenityIV]

Also, while I'm here.. Is the OTO chlorine test that this kit came witg sufficient enough to check each morning to determine how much bleach to add daily? It would have to be 5 or below though, no? That's kinda tough, haha.

 

[Oly]

With your CYA at 40 you should be targeting 7ppm FC every day.
FC/CYA Levels
No reason to cut it so close in my opinion.

 

[frogabog]

Also, while I'm here.. Is the OTO chlorine test that this kit came witg sufficient enough to check each morning to determine how much bleach to add daily? It would have to be 5 or below though, no? That's kinda tough, haha.

If you are using it to check FC before you add chlorine intended to get to target, then sure. There's a good chance you'll be below 5. But it's so hard to color match with the OTO that I can't imagine using it daily. I'm sure I'd get frustrated. The yellow just isn't fun.

 

[SerenityIV]

Do you just use the FAS DPD test daily then?

Sounds good too, Oly!

 

[Oly]

If you are still figuring out your pool system , test as often as you need. It helps to learn how much FC you lose each day and it is good to check and hour after an application to confirm your assumptions. Also good to test the Overnight Chlorine Loss Test if diagnosing FC loss. Over time you will learn your pools trends and will test less often. It is a moving target because there are season differences as well. Have fun with it you are in control now.

 

[SerenityIV]

Sounds great! Thanks so much for the help. It's great to have this thing where I want it after hours of reading on here. That's what I was thinking.. Once I see the trend, daily testing won't necessarily be needed and I'll know how much chlorine needed per day for the most part. How exciting!