PAK® 27 Non-Copper Algaecide
Non-copper algaecide that can be used in waterbodies with sensitive fish like Koi and Trout.
- Better alternative to copper-based algaecides
- Provides immediate algae control by destroying cell membranes and chlorophyll
- No fishing, drinking, swimming, or irrigation restrictions
- Organic Materials Reviews Institute (OMRI) certification for organic use
OVERVIEW
Non-Copper Algaecide
PAK® 27 is an effective non-copper and environmentally compatible algaecide that delivers both selective and broad-spectrum algae control through the process of oxidation, releasing hydrogen peroxide into the water supply.

WHEN TO APPLY
Apply when algae is present and growing.



WHERE TO APPLY
Use wherever algae growth is present.
Aquatic sites that may be treated include ponds, lakes, reservoirs, wetlands, marshes, swamps, bayous, ditches, canals, streams, rivers, creeks and other slow-moving bodies of water.
Key Features
- PAK 27 works through an oxidation process, releasing hydrogen peroxide into the water supply.
- Approved for sensitive fish like Koi & Trout
- Control of sensitive green algae and diatoms
- No fishing, drinking, swimming, or irrigation restrictions
- Better alternative to copper-based algaecides
- Provides immediate algae control by destroying cell membranes and chlorophyll
- Granules provide targeted delivery to bottom-dwelling algae
- NSF/ANSI Standard 60 Certification for use in drinking water supplies at maximum-labeled rates
- Organic Materials Reviews Institute (OMRI) certification for organic use
Shipping Restrictions
Cannot ship to WA, NY, NJ, ME, HI, CT, CA or AK
Seasons of Usage



Area Coverage
30-100lbs per surface acre
Where to Use
Aquatic sites that may be treated include ponds, lakes, reservoirs, wetlands, marshes, swamps, bayous, ditches, canals, streams, rivers, creeks and other slow-moving bodies of water.
Labels
When to Use
Apply when algae is present and growing.
Safety Data Sheet
Download Product SDS
Weeds Controlled
- Filamentous Algae
- Planktonic Algae
- Blue-Green Algae
- Chara
Step 1
Assess and determine how large your desired treatment area is.
Step 2
Apply the product from the shoreline over the desired treatment area until you get a good even coating over the site.
Step 3
Wait two weeks between applications and repeat in untreated area. See label for complete use directions.