It's funny, I have 3 different manufacturers bottles of poly 60 and they all have different instructions.
Pooltrine 60 = 3 ozs per 10,000 gals
Leslie's algae preventer step 4 = 2-4 ozs per 10,000 gals
Anthony & Sylvan "pro" 60 algaecide = 2 1/2 ozs per 10,000 gals

Sounds like 3 oz would be average. I have been using 4 ozs every 7 days successfuly.


Michael - Downloaded your new calculator. Thanks, They have been a great help!

ivyleager- I'm a Canes fan as well Have some of my favorite Flyers on the team