High phosphates and ch

[ciaka]

Any advice to lower phosphates?
Tested water. 35k gal pool. Not salt.
Fc: 8
Cc: 0
Ph: 7.8
Ta: 60
Ch: 600
Cya: 60
Phosphates show at 800ppb
Iron: 0.1
Copper: 0
My tds: 1000
Temp now of water is 51F

I am concerned if 3 things
1. Ta. I plan to raise with baking soda to about 75 or 100.
2. Phosphates. Any good way to reduce? Does it need reducing?
3. Ch. 600 seems high. Any target i should be aiming for and how do i reduce if needed?
I plan my cya to be around 70 tx sun. About to come out.
Thank you for your time.

 

[mknauss]

I suggest you review Pool Care Basics

Phosphates, especially at that low level, are rarely of any consequence. Why are you concerned about them?

What are you calling 'ch'? Baking soda will raise your TA. What is your TA?

 

[Newdude]

Any advice to lower phosphates?

I'll do one better. Ignore them altogether.

my reading is at 700.

That's 700 pp*B*. Billion. The other parameters are in ppM, at 1000X the concentration.

For my ch I plan baking soda

Do you mean raising PH ? If so use 20 mule Borax.

 

[ciaka]

I suggest you review Pool Care Basics

Phosphates, especially at that low level, are rarely of any consequence. Why are you concerned about them?

What are you calling 'ch'? Baking soda will raise your TA. What is your TA?

That was my mistake. I should rephrase it all. I'll fix in op text too.


Tested water. 35k gal pool. Not salt.
Fc: 8
Cc: 0
Ph: 7.8
Ta: 60
Ch: 600
Cya: 60
Phosphates show at 800ppb
Iron: 0.1
Copper: 0
My tds: 1000
Temp now of water is 51F


I was told by pool guy (neighbor has service) Phosphates are too high.
So wanted get you fine folks opinion. Thank you.

With baking soda comment I meant to say raise my ta.

 

[mknauss]

Please post test results from your own test kit.

No need to adjust anything if those tests are near accurate.

 

[pjt]

Tested water.

How are you testing? A quality test kit is the best money you'll ever spend on your pool.

Not salt.

How are you chlorinating? I see you have a Nature2 Fusion. Mineral systems are not recommended. Trichlor tabs are unsustainable for routine chlorination. Your PoolMath logs show LC additions. You're a great candidate for a SWG.

Ta. I plan to raise with baking soda to about 75 or 100.

TA down to 50 is fine. Trichlor tabs are acidic and will lower TA, so you'll need to monitor TA closer if you continue using them. If you're only using LC to chlorinate, don't add any baking soda.

Ch. 600 seems high.

That's manageable. How did it get that high? Have you been adding cal hypo or calcium? What's the CH and TA of your fill water?

 

[ciaka]

How testing? Taylor k-2006C kit

Nature 2 fusion installed but I removed the cartridge. Nothing in it.

How chlorination?
Not using trichlor tabs at all.
Liquid Chlorine 10% into pool waterfall stream when I add.

My fill water ch?...it was in 400-500 range last tested. Any way to reduce that? To say 200?

 

[ciaka]

MY test kit results
FC: 6.0
CC: 0.0
pH: 7.8
TA: 75
CH: 500 I get fading so hard to tell color change in test
CYA: 60
Water temp is 51F
My csi: -0.010

 

[ciaka]

Please post test results from your own test kit.

No need to adjust anything if those tests are near accurate.

Is scaling a potential issue at this level though?

 

[mknauss]

You are getting up there in CH. Do the fading endpoint method for CH testing (see Pool School) or cut the pool water by 50% using distilled water and do the CH test and double the results.

You should be able to harvest rain water to manage your CH. Try to limit how much tap water you add. Or if you have a water softener, use softened water when possible to fill the pool.

 

[pjt]

Taylor k-2006C kit

Would you add that to your signature when able? Do you have a SpeedStir?

Nature 2 fusion installed but I removed the cartridge. Nothing in it.

Great. The minerals and excess CYA from tabs are counterproductive.

Liquid Chlorine 10% into pool waterfall stream when I add.

Are you planning on LC for long-term daily chlorination?

My fill water ch?...it was in 400-500 range last tested.

That seems very high. Didn't know the Austin area had high calcium in the water supply.

Any way to reduce that? To say 200?

Water softener. I also try to use as much rainfall as possible to fill my pool.

Is scaling a potential issue at this level though?

Manage CSI to avoid scaling. PoolMath will do the calculations. I target a slightly negative CSI between zero and -0.3

 

[mgtfp]

Ta: 60

1. Ta. I plan to raise with baking soda to about 75 or 100.

Your TA is fine. Increasing TA will just increase pH-rise due to CO2 outgassing.

The lower your TA is, the less scaling your water will be, especially once water temperatures are up again.

Just don't let TA fall below 50. When you reach 50, then raise it to maybe 70. Certainly not 100, this will result in scaling conditions with your CH.