Swimming Pool & Hot Tub PH

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toddcl
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Swimming Pool & Hot Tub PH

Postby toddcl » Fri Oct 06, 2006 6:39 pm

Having just filled the hot tub for the first time and purchased some chlorine from the ferreter'ia, we tested the water to find the PH was through the roof.

So off back to the ferreter'ia for some PH lowering acid.
The man no comprehend, but was sure he did not have any.

We searched all the supermercado's and the Farmacia without any luck.

So the question is 'Where did we find the PH lowing acid'
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katy
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Postby katy » Fri Oct 06, 2006 7:12 pm

Beachcomber knows something equivalent to this (I'm hopeless at searches). If not you need to find a swimming pool shop.

Campo Kenny

Postby Campo Kenny » Fri Oct 06, 2006 7:19 pm

A little splash of Agua Fuerte which is sold at all ferreterias will do the trick.
I'd leave it for a while before having a dip and retest it beforehand.....it does work.

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Postby Beachcomber » Fri Oct 06, 2006 8:18 pm

No, No, No, agua fuerte NO! Especially not in a hot tub. Would you really want to bathe in hydrochloric acid?

What you need is sodium bisulphate, more commonly known as pH menos, minorador de pH or reductor de pH.

It is sold in tubs similar to those in which you buy the chlorine.

If you can't find it in the ferretería and there is no pool shop locally you will find it in most large hypermarkets.

Campo Kenny

Postby Campo Kenny » Fri Oct 06, 2006 8:46 pm

I'll get me coat

El Cid
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Postby El Cid » Fri Oct 06, 2006 10:17 pm

Beachcomber wrote:No, No, No, agua fuerte NO! Especially not in a hot tub. Would you really want to bathe in hydrochloric acid?
And why not?

Hydrochloric acid is a well established and well recommended method of reducing pH in pools.

You may choose to use sodium bisulphate but it is not the only way. If fact, doing so, is chemically equivalent to adding Sulphuric acid!

They are both acidic and therefore reduce the alkalinity. Some people prefer to use powdered Sodium Bisulphate as it is less dangerous to store and use. If fact, in the UK it would be impossible to buy Hydrochloric acid at 25% strength in the supermarkets as you can do in Spain.

Once diluted it makes no difference in the pool.

Sid

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ph

Postby julian » Fri Oct 06, 2006 10:46 pm

all this is bringing back nasty memories of chemistry lessons at school !!!

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Postby Beachcomber » Fri Oct 06, 2006 10:47 pm

Sid, you and I are destined to disagree until the end of time over the welfare of our respective swimming pools (and the people who use them). :(

However, I have to admit that I bought a digital satellite receiver from Lidl, although I did trip over a load of rubbish on my way out. :mrgreen:

Campo Kenny

Postby Campo Kenny » Fri Oct 06, 2006 10:49 pm

We should have kept it a secret Sid :wink:

Campo Kenny

Postby Campo Kenny » Fri Oct 06, 2006 11:04 pm

If I were wealthy enough I'd use none of these un PC hideous additives and order myself 10 million Jif lemons. Pool would smell nice too :idea:

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Postby El Cid » Sat Oct 07, 2006 8:27 am

Beachcomber wrote:I have to admit that I bought a digital satellite receiver from Lidl
Well, that's a step in the right direction.

Next you'll be telling me that you like their Raspberry jam! :D

Sid

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costakid
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Postby costakid » Sat Oct 07, 2006 9:02 am

I get a pro in to sort it, i would not want to dip my hugging tackle in to a solution of any kind of acid. LOL

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Postby anyroads » Sat Oct 07, 2006 12:16 pm

"Well, that's a step in the right direction. "

No El cid, a step in the Wrong direction, he did trip over that pile of rubbish remember !

Anyroads

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Postby Beachcomber » Sat Oct 07, 2006 12:24 pm

...and the one and only checkout girl was chewing the same piece of gum when I finally got to the front of the queue as she was when I joined it about fifteen minutes earlier. :shock:

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Postby peteroldracer » Sat Oct 07, 2006 3:19 pm

El Cid said "Hydrochloric acid is a well established and well recommended method of reducing pH in pools."
This is a well established method well recommended by the building fraternity, as the damn stuff eats tile grout!
Keep on putting in the agua fuerte, and next year you can invite your friends round to enjoy watching the nice man in the neoprene suit with air tanks on his back, struggling to regrout underwater!
Or, of course, you can drain it, miss out on the frogman, and simply pay 750 € for water to refill...............
Usual rule applies - penny wise, Euro foolish!
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Postby El Cid » Sat Oct 07, 2006 4:19 pm

peteroldracer wrote:This is a well established method well recommended by the building fraternity, as the *beep* stuff eats tile grout!
But not at 3 parts per million it doesn't.

Check out all the pool maintenance sites on the Internet and you will find they recommend either Hydrochloric acid or Sodium Bisulphate.

Sid

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Postby El Cid » Sat Oct 07, 2006 4:22 pm

Beachcomber wrote:...and the one and only checkout girl was chewing the same piece of gum when I finally got to the front of the queue as she was when I joined it about fifteen minutes earlier. :shock:
You are obviously going to the upmarket branches.

The ones in our branch chew tobacco. :lol:

Sid

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toddcl
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Postby toddcl » Sun Oct 08, 2006 4:43 am

We found the PH acid in the perfume shop of all places in 1 liter bottles. Would have preferred dry acid as my wife is a bit of a pool maintenance buff, having been in pool management for over twenty years in the UK.

She drives me mad sometimes with her constant water testing.
Whats wrong with itching and occasional red blotches, it goes eventually.
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Postby anyroads » Mon Oct 09, 2006 11:54 pm

I don't suppose asses milk would do the trick ?

Anyroads


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