Quote Originally Posted by Watermom View Post
It's been a long time since I've used any polyquat so I had to look up the dosing information. What does it say on the label? I believe, unless it has changed, that the dosing is 9 oz. per 10,000 gallons of water. Please look at the label and see if that is correct and let me know. And yes, you can add it in front of the return. You also might want to put your filter on recirculate for awhile so it doesn't filter out so fast.
exactly right Watermom! I found it on here as well. the label also says about the same thing (depending on before or after algae dosage). I added 14 ounces in front of the return and set the filter to circulate. I'll check FC in the morning and bump it up some.