I have an inground vinyl pool, approx 30,000 gallons. I switched to the BBB method from Baquacil a year ago and have been quite pleased with the results. One thing I have noticed this year is a yellow stain on my fiberglass steps (bottom one primarily) and also around my inlet ports. It is not an algae type growth as I have scrubbed the steps and the ports with little result.
Any clues as to the cause. My water is very well balanced with PH in the 7.4 range. TA at 90 and chlorine levels also good...
Thanks in advance
Any clues as to the cause. My water is very well balanced with PH in the 7.4 range. TA at 90 and chlorine levels also good...
Thanks in advance