Metal in the water (Fiberglass 35K pool)

[mbar]

Were all of the stains gone first, and coming back now - or were they never lifted off in the first place. If the stains just came back, drop your ph back to 7 and add more sequestering agent. If the stains never came off in the first place, add more ascorbic acid and let the pump circulate for a while. Your water shouldn't get very cloudy again, maybe just a little. You don't need to take you chlorine down again, but watch it because the ascorbic acid will use up the chlorine fast. I am surprised about the cya, did you lose any water?

[blk133]

Since I added Ascorbic acid from the plastic cup around the walls of the pool, stains came off that were close to the walls at the begining, then water became cloudy and after that they came back.

Now (as it was before) the whole floor of the pool is covered with a layer of stain.

As you know I bought 5 lbs of Ascorbic Acid and 4 bottles of Sequestering Agent, I used 4lbs and all 4 bottles on day one when I started all that.

Yesterday I poured in 2 more bottles of Metal Out with the pump off. Direction was to have the pump off for 8 hours (for stain removal process). It didn't do anything to the stains.

I had about a pound of Ascorbic Acid left in the bag so I droped it in and as soon as Ascorbic Acid touched the floor of the pool stain started to disappear around those spots. So I know that it is deffinately a metal.

CYA went down for no reason, I already put in 6 lbs of CYA into the pool and now it is back at 20-30. Haven't shocked the pool yet since the time I started all of this.

Now I don't have Ascorbic Acid anymore, all 5 lbs are gone, stain still there, sequestering agent is gone LOL. And I am out of $130. Expensive treatment that didn't do much. Don't get mad guys it's not your fault. Thanks for helping me. I am out of ideas on how much more of this freaking acid do I have to add.

[DavidD]

B,

So sorry to hear that. Don't spend another dime yet. How's your PH? Go ahead and post all your numbers. Also, you may want to take a sample to a "reputable" pool store, if you can find one , and get them to test for metals so we know which metal is giving you the problems. Bring a sample of your tap water as well for testing.

Dave

[mbar]

So sorry to hear of the trouble you are having. Can you post your numbers so that maybe I can see something that would make sense as to why the sequestering agent isn't keeping the metals in suspension after they are lifted from the pool. Having the cloudy water really seemed to be that the metals went into suspension. Is there something that could be putting more metal into your pool? Do you have copper pipes? I am just trying to figure out what is going on. Your clacium level is not high - so it can't be that - and the ascorbic acid is taking the stain off - so something is either putting more metal in the water, or the sequestering agent isn't working, maybe there isn't enough in the water - You may have to add more - if you had a lot of stain, maybe there was just too much metal for the amount of sequesterer you put in. I would take the ph down to 7, add more sequestering agent and see if the stains get lighter.

[blk133]

Guys,

I am back to step 1, Stain is even worse than it was before. Floor and walls are covered with this brownish/yellowish layer. Looks very dirty. As soon as I drop vitamin C it disappears around the vitamin.

I went to the local pool store (Leslies) guys checked the water for metal and said 0 metal in the water. He couldn't even sell anything to me just said that my numbers are perfect.

Chlorine 4ppm
Total Chlorine 4ppm
PH 7.2
Alk 80-90
Cal 120-130
CYA 30

We had a heavy rain here and maybe that caused it to stain even more than it used to be.

I don't have anything in the pool that could cause it to stain. Pool heater is Aquacal h155 that has a titanium heat exchanger, filter Hayward DE EC-75 and polaris 380.

All pipes are PVC.