Jasheon
04-25-2011, 11:47 PM
I posted a few things last year and this forum really helped me out, I really appreciate all the help last year. I have ran into another problem at the Apartment Complex Pool that I take care of. Within the past 6 months or so, i have noticed these hockey size/shape brownish stains at the bottom of the pool. I have tried taking a pumice stone and rubbing on it lightly and doesn't work. I have tried taking some PVC pipe and pouring down some Muriatic Acid on the stains and did not work. So the last thing I tried and it worked, was taking a 3 inch stabilized chlorine tablet and letting it sit on the stain for about 10mins. BAM! it worked the stain was gone. I did have the metals tested a few months ago and they said the copper levels were kind of high, I do not remember the exact number. So since then i have been adding a bottle of Metal out once every 2 weeks. I can get the water retested for copper. So I guess it's copper in the water that is causing these stains?
My question is why do the chlorine tablets work and not the pumice stone or Muriatic Acid? I would think the Acid would work easily, it burns off the first layer of plaster off right?
Chemical Levels
CH 300
pH 7.3
TA 105
CYA 55
FC 5
TC 4
I think the pool is around 35k gallons or a bit larger.
Thanks!
My question is why do the chlorine tablets work and not the pumice stone or Muriatic Acid? I would think the Acid would work easily, it burns off the first layer of plaster off right?
Chemical Levels
CH 300
pH 7.3
TA 105
CYA 55
FC 5
TC 4
I think the pool is around 35k gallons or a bit larger.
Thanks!