Non Chlorine shock

[Gregharnd]

Hi
Would like opinions on Non chlorine shock. Once I get my salt pool dialed back in should I consider this. I have read and have people say that if they have pool in control that they shock with non chlorine shock every week or so as maintenance or after heavy usage. Is this something I should follow.
Thank You
Greg

 

[Donldson]

No. A properly chlorinated outdoor pool does not need a supplemental oxidizer. Especially with a saltwater pool you don't want to introduce sulfates to the water as they can be bad for the salt cell and the most common sources of sulfates are non-chlorine shock and dry acid. Avoid both of those.

 

[Jimrahbe]

Greg,

One of the great advantages of following the TFP principles is that you will never have to add weekly doses of any kind of shock.

As long as you maintain your FC in relation to your CYA level you are good to go...

I have a three year old saltwater pool and I have never added pool store "shock" of any kind...

Thanks for posting,

Jim R.

 

[Gregharnd]

Thanks
Jim
What about the chloramines that would build up over time from heavy usage and chemicals. Are you just waiting til your free chlorine is bad then doing a slam.
Thanks Greg

 

[mknauss]

Chloramines (CC) are removed from your pool water by UV - the Sun! So as long as you uncover your pool (if you keep it covered), the sun shining on the pool surface will burn off the CC

Can you fill out a signature for us - really helps us respond -- see Pool School - Getting Started

 

[Gregharnd]

Thanks mknauss
So the sun will burn off the bad chloramines but will also use up some Chlorine also right. So seems to me if chem is in balance and I keep Chlorine up to the Chlorine to CYA chart should be pretty trouble free. Going to be doing a drain and replace of water. What is your recommend way of start up. Salt first then balance chem or the other way round.
Thank You
Greg

 

[YippeeSkippy]

Greg, just using a non-chlorinating shock type product is going to mess up your testing as it gives false readings of CCs.

Our method uses the *least* amount of chemicals as any I've ever seen. You ONLY put in the water exactly what it needs, not what some pool store tells every pool owner to add without consideration to what the *accurate* test results say.

Maddie

 

[mknauss]

Starting from fresh you get your parameters were you want them (CYA, pH, FC) then add your salt and start your SWCG. Though right now you are on the cusp of shutting down the SWCG for the winter. So up to you. I typically shut off my SWCG once my water is at 65F and just use bleach. Only takes a quart or so a week once we are in November.

Have you had issues is why you are draining? If so, I would suggest getting 30 ppm of CYA in your fresh water, lower your pH to 7.2, and take your FC to shock and do a mini-SLAM prior to anything else.

Take care.

 

[Gregharnd]

Hi
I decide to do a SLAM for learning purposes. I used liquid chlorine 12.5% and brought my Chlorine levels up to the SLAM level for my CYA as per this website. I kept the level for 2 days and then did the OCLT test the next night. Next morning readings Ok. This worked great for me. As water is the clearest it has ever been. Below are my levels as of this morning. So thinking of bringing my CYA up to 70 what do you think about the TA it is a little high as per website but PH has been of for 2 days now. Now will keep watch on the FC as this was my problem. As per website here it recommends 3-5 on the chlorine do you think it is better to stay on the high side.
Thank you for all your help.

Salt 3400
FC 5
TA 120
PH 7.4
Calcium 220
Cya 50

 

[YippeeSkippy]

When you take your CYA up to 70 your bottom line is 3ppm FC, with 5ppm being preferred. Knowing that your pool in sunny CA is going to lose probably 2ppm of FC to the sun I'd take it to 6 or 7ppm daily so that when the sun takes it's toll, you are still above that 3ppm basement level of FC. I like to play it safe, y'know?

Your TA can come down with MA- Pool School - Lower Total Alkalinity

Maddie