Hello,
My first post here and a new pool owner so bear with me for any negligence!
I have recently installed a white fiberglass pool for my hotel business and for the past month or so I have witnessed a light brown stain/film (please review pics) developing randomly on the walls and the floor of my pool. As time passes it's slowly taking over the pool and I have yet to find a solution. Touching it barehanded, it does not feel any different from the gel coat.
FYI, I have tried scrubbing by hand and with a nylon brush, scrubbing with Vitamin C tablets, scrubbing with chlorine tablets and scrubbing with a sock, a pole and muriatic acid (PH-). None of these methods seem to work.
I check chemicals daily and my readings always fall in between these ranges:
PH 7.2-7.5
FCL 1-3
TA 50-100
CYA 50-100
My pool installer insists that I lower the PH to 6.8-7.0 and the stain will slowly dissolve as she believes it is metal/iron deposits from the refill water I use (local municipality).
I am not certain I should do this as I have customers who will be using the pool until the end of September! If I lower the PH, I'm afraid I may cause a health issue to a customer but on the other hand, if I don't do anything I'm afraid this stain will only get worse!
Finally, and just to add some more suspense, I am in Greece! Which means I do not have access to stain ID test kits as I cannot find vendors sending these kits here! And if they do send, it ends up double the price and at least a month delivery. As an example, to buy a proper water testing kit (Taylor 2006C) I have to pay 100 dollars extra just for delivery! (I know, I have to and I will buy it eventually)
Any ideas or any assistance will be highly appreciated.
P.S. I have recently purchased the Lo-Chlor Multi Stain Removal and No More Metal products. I intend on using these in October when I close off the pool.
My first post here and a new pool owner so bear with me for any negligence!
I have recently installed a white fiberglass pool for my hotel business and for the past month or so I have witnessed a light brown stain/film (please review pics) developing randomly on the walls and the floor of my pool. As time passes it's slowly taking over the pool and I have yet to find a solution. Touching it barehanded, it does not feel any different from the gel coat.
FYI, I have tried scrubbing by hand and with a nylon brush, scrubbing with Vitamin C tablets, scrubbing with chlorine tablets and scrubbing with a sock, a pole and muriatic acid (PH-). None of these methods seem to work.
I check chemicals daily and my readings always fall in between these ranges:
PH 7.2-7.5
FCL 1-3
TA 50-100
CYA 50-100
My pool installer insists that I lower the PH to 6.8-7.0 and the stain will slowly dissolve as she believes it is metal/iron deposits from the refill water I use (local municipality).
I am not certain I should do this as I have customers who will be using the pool until the end of September! If I lower the PH, I'm afraid I may cause a health issue to a customer but on the other hand, if I don't do anything I'm afraid this stain will only get worse!
Finally, and just to add some more suspense, I am in Greece! Which means I do not have access to stain ID test kits as I cannot find vendors sending these kits here! And if they do send, it ends up double the price and at least a month delivery. As an example, to buy a proper water testing kit (Taylor 2006C) I have to pay 100 dollars extra just for delivery! (I know, I have to and I will buy it eventually)
Any ideas or any assistance will be highly appreciated.
P.S. I have recently purchased the Lo-Chlor Multi Stain Removal and No More Metal products. I intend on using these in October when I close off the pool.