your water may or may not test positive for iron if you have staining. If the cause of the iron was not a continuous one and the iron has already deposted as stain then you will very probably test no iron in the water.
Re: Quarter sized oval shaped ringed rust stains on bottom of pool . . .
your water may or may not test positive for iron if you have staining. If the cause of the iron was not a continuous one and the iron has already deposted as stain then you will very probably test no iron in the water.
Retired pool store and commercial pool maintenance guy.
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