New tests need help

[Kooky98]

Learning - input please and thanks
Yesterday morning
FC 1.8
CC .4
PH 8
TA 170
Added chlorine in morning
LAST NIGHT
ADDED 2.5 oz of sodium Bisulfate (i have on hand)
A few hours later added CL (Low via strip)
THIS MORNING
FC 4.8
CC 0
PH 8
TA 170
POOL MATH SAYS ADD 8.2 DRY ACID.
FYI CNA was in 30 rage two days ago. It is going to rain the next few days

 

[Texas Splash]

Those numbers need a little work, but without a good test kit it's almost impossible. Are you still using test strips for everything? Any plans to get a TF-100 or Taylor K-2006C?

 

[Kooky98]

I used Taylor 2006 for all except a quick CL check last night.

 

[Katodude]

Start by reading this. Also using dry acid is not recommended. I would go buy some Muriatic Acid. Also some LC. You will need to add that to your pool and get that level up.

ABC's of Pool Water Chemistry

There are several items things every pool owner should know about swimming pool water. We share details on the basics of Pool Water Chemistry.

www.troublefreepool.com

 

[PoolBrews]

How do you get .4 for CC? I thought the test only shows in .5 increments?

 

[zea3]

Use poolmath to calculate how much muriatic acid to add. There is a link on the left side of the screen. Your pH is very high, it may take several applications of MA to get the pH down to 7.5

 

[Katodude]

How do you get .4 for CC? I thought the test only shows in .5 increments?

If you test with a 25ml sample the results will be in .2 increments. It just uses more reagents though.

 

[Kooky98]

How do you get .4 for CC? I thought the test only shows in .5 increments?

Used 25ml # drops x .2

 

[Texas Splash]

I used Taylor 2006

That's reassuring and most important. Great! Be sure to add that kit to your signature. Probably shouldn't use that nasty word (test strips) as you can tell we're like sharks here at TFP about those products. Ha ha. If you do wish to perform a quick total chlorine check, you can use the viewing comparator (yellow drop test). Once you get the pH lowered down to the mid-7 range, continue to keep an eye on your FC. As summer approaches you might also watch the CYA. Maybe summer pools nee d a CYA of at least 40 to protect the chlorine from the sun. Where I'm at we go much higher, but 40 may be fine for you. Just something to be aware of.

 

[Texas Splash]

For FC testing using the FAS-DPD (powder & drops), you can use the 10 ml water sample size with ONE generous scoop of powder which should turn Barbie pink. Mix and count drops until clear, then divide result in half. Example: 12 drops equals an FC of 6.

 

[Kooky98]

Start by reading this. Also using dry acid is not recommended. I would go buy some Muriatic Acid. Also some LC. You will need to add that to your pool and get that level up.

ABC's of Pool Water Chemistry

There are several items things every pool owner should know about swimming pool water. We share details on the basics of Pool Water Chemistry.

www.troublefreepool.com

Thanks. I wasn't able to get to pool store this weekend. I will go tonight after work. I used what I had bought and never used last year.
I have been using LC.
I thought my CL was ok this morning.
FC 4.8 (high), CC 0.

 

[Kooky98]

That's reassuring and most important. Great! Be sure to add that kit to your signature. Probably shouldn't use that nasty word (test strips) as you can tell we're like sharks here at TFP about those products. Ha ha. If you do wish to perform a quick total chlorine check, you can use the viewing comparator (yellow drop test). Once you get the pH lowered down to the mid-7 range, continue to keep an eye on your FC. As summer approaches you might also watch the CYA. Maybe summer pools nee d a CYA of at least 40 to protect the chlorine from the sun. Where I'm at we go much higher, but 40 may be fine for you. Just something to be aware of.

Thank. Will do that as quick test next time! I have a small puck in the water. I am going to retest the CYA tomorrow. I used a lot of regent doing it wrong the first time and dropping test another time!

 

[Katodude]

Also for FC I would start testing with a 10ml sample instead of 25ml. It will save you on reagents and the .5 precision is enough.

Use a 10ml sample and heaping spoon of powder. Each drop = .5ppm of FC.

 

[Kooky98]

I bought KLEEN STRIP GREEN muriatic acid at home depot, please confirm it is ok to use. It doesn't give concentration level. I didn't want to buy two gallon jugs at pool store !

 

[Texas Splash]

It is okay, but I believe it's the lower strength 15%, hence the low fume statement on the bottle.

 

[Texas Splash]

Actually I found a couple MSDS products for this product. One shows it as 20%, the other simply says < 30%.

 

[Kooky98]

I am going to start by adding less and bring down slowly. Should I aerate once in or leave it?

 

[zea3]

Do not aerate. Aerating brings pH up and we need to lower yours.

 

[Kooky98]

Actually I found a couple MSDS products for this product. One shows it as 20%, the other simply says < 30%.

Interesting. I think of MSDS as needing to be accurate. Hard to figure out amount needed, not knowing.

 

[NCMike]

My home depot has kleen strip muriatic acid for 9.98 for 1 gallon in the paint section and pool section. Right beside the kleen strip in the pool section is a cardboard box with 2 gallons of HDX muriatic acid for 12.98 for 2 gallons. next time your at home depot check the pool section for HDX muriatic acid to see if you can save some money.