Hi All,
I've been haunting this site for a few weeks now. Great information!

I installed an in-ground vinyl pool last summer. This summer, I'm having algae issues (it's gone green for the 2nd time since opening it a month ago.

Here's my question;

How much chlorine can I pour in (PPM), and be sure that I'm not bleaching the vinyl?

It's an 18' x 38' pool. 3 - 7' deep, 22,000 gallons. Right now, chlorine is around 6.8 - 6.9ppm.

Thanks!
Dave