Hi all,
I have a persistent problem I hope someone can help me with.
Last summer (Australia, so around December 2011) I started noticing all our bathing suits were starting to show green stains after a swim. I took a water sample to my local pool shop and the guy tested it for Copper and the reading was quite high so it was decided that this was the problem. I use a 5 in 1 chlorine which has algecide so that is where we thought the copper might have been coming from.
I treated the pool (all 70,000 litres of it!) with several bottles of stain remover over a few weeks to remove the copper and the levels dropped to an acceptable level.
Even after that treatment, we are still getting green stains!
I do not over chlorinate my pool so it can't be that surely?
Any ideas why we still get the stains?
I have a concrete pool, like i said 70,000 litres, with a sand filter.
Any help would be great, cheers.