Chlorine - Algaecides - Green Air

[drekar42]

Okay, I've been using the TFP method and my pool is crystal clear but my daughter is getting some green tint to her blonde hair. No clue why....

My CYA is right around 40 and my FC is 4.00


Friends of ours have a pool that is maintained by a service and it keep a very low FC but super high CYA.

Is there any way to figure out what is in their pool to maintain that balance?

Thanks,
Dave

 

[Demegrad9]

Are you concerned about your pool or your friend's? Is your daughter using both pools often?

Blond hair getting that green tint is copper in the water, very common for people using a pool service. But it sounds like you're saying that your daughter's hair is a result of your pool which is curious. Have you had your well water tested for metals?

 

[drekar42]

The green tint is from our pool - she's not at her friend's pool very often.

There was a little rust in our water but that's it.

Dave

 

[mknauss]

What pool care products are you using that contain copper? If the product name has 'Blue' in it, it most likely contains copper.

To remove the copper a sizable amount of the pool water will need to be exchanged with fresh.

 

[drekar42]

I have never used anything but chlorine & muratic acid.

When I filled the pool I added CYA to bring it to 30.

Dave

 

[mknauss]

There is a source of copper from somewhere.

 

[cfherrman]

Her hair is coming into contact with copper water, from somewhere

Your friends pool is relying on luck, a few algae blooms a year, copper, and cash shredded and compressed into phosfree

 

[tim5055]

Do you have a heater that is not listed in your signature?

 

[Demegrad9]

What are you using for you chlorine source?

 

[drekar42]

Yes - I do have a Hayward heater that I just added this year.

I have always added only liquid chlorine and muratic acid.

I added 1lb of shock and swim on a hot day that we had a bunch of kids in the pool.

Dave

 

[mknauss]

A heater with very low pH can put copper in the water.

Has your pH been managed often to keep it in the 7's?

 

[tim5055]

Yes - I do have a Hayward heater that I just added this year.

Dave

I would be looking at the heater. The heat exchanger pipes can leach copper into the water at lower pH levels.

 

[drekar42]

It's always been at 7.4 - very consistent. What's the best way to test for copper.

 

[cfherrman]

Fast and dirty is take it to the pool store, turn the ppm they give into a yes/no

 

[drekar42]

Taking my water to a pool store - Monday.

Tested today.

FC - 4
PH - 7.2
TA - 50
CH - 150

 

[cfherrman]

What does your pH do? Your ta might be low if your pH crashes a lot. Have you seen what kind of heat exchanger you have?

 

[drekar42]

My PH has been rock solid, I did just add some baking soda to bring up my TA a little as a preventative measure but that's about it.

My heater is a Hayward 250 so it has the [h=3]Cupro Nickel Heat Exchanger[/h]

 

[YippeeSkippy]

Friends of ours have a pool that is maintained by a service and it keep a very low FC but super high CYA.

Is there any way to figure out what is in their pool to maintain that balance?

Just to answer this question- they may be using a salt water generator which allows for lower FC yet requires higher CYA. Pool Service folks still manage pools with SWGs, so that may be the answer to how *they* do it.

Maddie

 

[drekar42]

Okay - took my pool water to a pool store and they are showing 0.2ppm Copper. I'm guessing that's not what is contributing to my daughter's green hair.

On a different note - they are showing the CH at 455 but I'm testing solidly at 140-160 everytime. Why the difference???

Dave

 

[jblizzle]

0.2ppm of copper is certainly plenty to be a contributing factor.
Above 0.3ppm is when staining of the pool often starts.

Are you and they using the correct multiplier for the size of the water sample used for CH?