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Quantity
1
Description
PAK® 27 is approved for use as an algaestat or algaecide for the selective and broad-spectrum control of algae and cyanobacteria in lakes, ponds, drinking water reservoirs, aquaculture and wastewater. PAK 27 works through an oxidation proce...
Reviews
3.0
2 ratings
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1
Not as effective as I had hoped. No damage to the fish!
R
Robert · April 29, 2026
Since you keep asking: Once it became apparent that this was the best way to control string algae, the price started going up— from just over $55 to more than $70 per bag. This alone keeps me searching for an alternative.
