Algaecide

How much algaecide should I add to 18,000 galon IG vinyl for winter? I live in Harford County, Maryland.

Thanks, Marty

The dosage will be on the label.

Thanks Dave,

I didn,t know if more would be better or if it would have any negative effects on the rest of the water chemistry.

Marty

Gotcha' now. I personally don't use it but those that do seem to indicate it's fine to overdose a little. Others better informed will give you a more accurate opinion.

Just make sure you are using polyquat algaecide.

CaryB

I usually add a double dose when closing per Ben's instructions.

Where are Ben's instructions?

They are not here. They were in some of the old threads that were lost when the forum crashed. He had recommended that a double dose of Polyquat 60% be added upon closing.

I think the standard for the Polyquat 60s was 9oz (initial treatments) -16oz (visible algae) per 10k of water - I put in 32oz today to prep for closing (the size of one bottle)