Rust stains on fibreglass pool

Stains on the pool surfaces, pool equipment
or on the swimmers, or off-color swimming pool
water. Discolored but clear pool water.
Mush
Pool Newbie
Pool Newbie
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Joined: Wed 24 Jan, 2007 22:17

Rust stains on fibreglass pool

Postby Mush » Wed 24 Jan, 2007 22:25

Hi

A pool toy ripped leaving a lot of small metal balbearings on the bottom of our pool. While we were away on holiday for a week, these have rusted leaving definite rust spots all over the bottom of our fibreglass pool. Scrubbing wil not remove them and I have tried a powder in the pool from the pool shop but none of these has worked - does anyone have any suggestions ?

:(

Michelle


Michelle
dynamictiger
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Joined: Thu 23 Nov, 2006 17:23
Location: Perth, Western Australia

Rust stains on fibreglass pool

Postby dynamictiger » Thu 25 Jan, 2007 15:40

To keep the pool open and usable try the following method, when you adjust the pH use the acid as follows.

For spot stain removal you can try placing a piece of PVC directly over the stain, adding a cup of acid into the PVC and waiting about 5 minutes. This method works but takes a few goes before it is effective.

Fiberglass particularly responds well to this method.

HTH
Mush
Pool Newbie
Pool Newbie
Posts: 3
Joined: Wed 24 Jan, 2007 22:17

Rust stains on fibreglass pool

Postby Mush » Thu 25 Jan, 2007 19:16

thanks for your reply

I did read this suggestion on another users question - my only thought is that is probably 100 of these rust spots throughout the pool. I was hoping for a "paste" of some sought that that could be used - my husband has a UBA and I could send him down the bottom of the pool for the day !!

If the is no such "paste" I wil give the acid a try.

Thanks very much for your reply

Michelle
Michelle
dynamictiger
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 254
Joined: Thu 23 Nov, 2006 17:23
Location: Perth, Western Australia

Rust stains on fibreglass pool

Postby dynamictiger » Thu 25 Jan, 2007 19:37

If the pool is covered in spots, then it can be fixed by a water filled acid wash. This requires the pool to be closed.

To calculate the quantities I need the pool volume and the total alkalinity right now once I have these numbers I can calculate the requirements.

I do not know of a paste.

You can call me an old fashioned bugger, but I have found no other method works consistently at removing stains other than acid.
Mush
Pool Newbie
Pool Newbie
Posts: 3
Joined: Wed 24 Jan, 2007 22:17

Rust stains on fibreglass pool

Postby Mush » Thu 01 Feb, 2007 03:10

the pool volume is 35000 litres and I am not sure of the exact the total alkalanity but I did recently put something in the pool to bring it up the recommended level (between 75 and 125) - I can get this retested if neccessary?

Michelle
Michelle
dynamictiger
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 254
Joined: Thu 23 Nov, 2006 17:23
Location: Perth, Western Australia

Rust stains on fibreglass pool

Postby dynamictiger » Thu 01 Feb, 2007 16:30

Yes please I need the exact TA for this to work properly and you need a test kit that can test for TA to use this method.
deanne
Pool Newbie
Pool Newbie
Posts: 1
Joined: Mon 20 Aug, 2007 21:24

same problem

Postby deanne » Mon 20 Aug, 2007 21:45

my pool is 42,000L, T/A is 130,Cl is 4.0, Ph is 7.6, rust marks steps and shallow end, tried pipe but to many.
Rusty

rust spots in pool

Postby Rusty » Fri 03 Oct, 2008 22:04

I,ve got the rust spots too and I'm not sure what caused it ( no tradesmen working around here with angle grinders).
Anyhow my next step is to try to remove the existing rust stains (100,s of spots).
Is there any more information on the acid dousing it looks like I' ll have to go in that direction?

Big thanks to any one who can help me.

RUSTY

:?:
Alemap

Rust Spots

Postby Alemap » Mon 08 Dec, 2008 23:50

Hi
My Daughter has just had her new fibreglass pool installed and the tradesmen were erecting the new pergola and used an angle grinder at the side of the pool. Now there are hundreds of rust spots at the bottom of the pool and it hasn't even been christened yet. They have tried the acid,tried rubbing with an eraser on the end of a pole but nothing has worked. The copers have been laid and this weekend the concrete is getting laid in readiness for the paving. But this might not happen yet as the builder may have to replace the pool through his insurance. Hopefully it won't come to that. Any advice would really be appreciated.
donna62

Rust stains on fibreglass pool

Postby donna62 » Mon 09 Mar, 2009 06:04

I read here on these forums that oxalic acid can help with iron rust. I never tested it ( never had rust) but it might be worth a shot :)

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