Cutrine Plus Granular Algaecide 30 lb

(1 review) Write a Review
Usually Ships in 24 hours
Free Shipping
  • Cutrine Granular Algaecide - 30 lb bag
  • Cutrine Plus Algaecide
  • Cutrine is highly effective for managing difficult string algae blooms


Cutrine Plus Granular Algaecide - our Best Selling String Algae Treatment

Cutrine Plus Granular is designed to control bottom growing string algae / filamentous algae, and chara. Cutrine is simple to use. The granular product sinks to the bottom of the pond quickly. 

EPA-approved for use in lakes and potable water reservoirs, farm fish ponds and fish hatcheries.

Treats up to 3/4 acre (32,670 sq ft)

How to use Cutrine:

Simply sprinkle recommended dosage in affected areas of the pond. For BEST results treat early on a clear sunny day. 

Application Rate for Cutrine Granular:

For spot treatment apply 1.5 lb per 1000 sq ft

For large treatment areas treat 40 lb per surface acre

How often should Cutrine Plus Granular be applied?

On average, Cutrine manages algae for approximately 5.5 weeks. Only 2-3 treatments per season are required for algae management.


Water Restrictions: NONE

Shipping Restrictions: Cannot ship to  CA, CT, IA, ME, MT, NE, NH, NY, VT and WA.

Other Restrictions: Do not use in ponds with Koi, Goldfish, or Trout unless carbonate hardness levels are above 50ppm.

Do NOT use in garden ponds.


String Algae treatment case study - After photo taken 25 days after treatment with Cutrine Plus and pond dye.


As with all of our products, we offer free technical support.

If you have questions about this product, e-mail us at and we will get right back to you. 


View AllClose

Additional Information

Pond Size:
up to 1/2 acre
View AllClose

1 Review

  • 5
    Easy to apply and it REALLY works!

    Posted by Mark on Dec 15th 2017

    I've tried a lot of algae treatments to get rid of filamentous algae on my farm pond. Nothing has worked like this!! It was easy to use.... no mixing, no spraying, just broadcast it over the pond and you're done. We used our small john boat to spread it. Will definitely be stocking up for next year!

View AllClose