Is there such a thing as purple algea?

[Deuce2]

Can you ever really totally get rid of it? Every time I think I have this beat, it comes back. Not real bad, but it does keep coming back. Any idea what causes it?

Thanks,

[waterbear]

too low a chlorine level causes it. It's hard to get rid of and takes very high chlorine levels. If you have high CYA than a sodium brominde based product (along with a LOT of chlorine) can be effective.

[Deuce2]

Thanks Evan.