SeClear Algaecide

5 out of 5 stars 2 Reviews | 2 Q&A

SeClear Algaecide

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Average Rating

5 out of 5 stars Rating: 5

2 Reviews | 2 Q&A

Product Overview

SeClear is a potent algaecide formulated to be an all-in-one solution to scum or toxic cyanobacteria in backyard ponds or lakes and reservoirs. This formula works as an algaecide and a water enhancer for better water management and improvement. Unlike other algaecides, SeClear reduces phosphorus content in the water which eliminates the vicious cycle of algae regrowth and algaecide reapplication. Apart from algae control, intervals between applications are much longer with this product and follow-up applications are much smaller as time goes by making it the cost-effective choice for an algaecide.  

Features and Specs

Active Ingredient Copper sulfate pentahydrate 16.2%
Target pests Green and Blue-Green (cyanobacteria) Algae; including Planktonic (suspended), Filamentous (mat-forming) and Macrophytic Algae (Chara/Nitella)
For use in Residential Ponds, Lakes, Reservoirs, Potable Water, Canals, Ditches, Irrigation and Drainage Systems
Application Surface Sprayers, Injection Algaecide application, Drip System, Metering Pump application for flowing water treatments
Pet safe Yes, if used as directed on Label
NOT FOR SALE TO CT, ME (Restricted To Licensed Applicators Only)
Shipping Weight 26.50 lbs
Manufacturer SePRO (Mfg. Number: EL1010225)
UPC 811055011299
EPA Registration 67690-55



Planktonic (Suspended)

  • Apply higher rates on heavy blooms and where algae masses are clumped and accumulated.
  • Dose of 0.15 to 1.0 PPM metallic copper.
  • Rate of 1.0 to 6.5 gallons per acre foot.

Filamentous (Mat-forming)

  • Apply higher rates on surface mats and species such as Pithophora, Cladophora, Lyngbya, and Hydrodictyon.
  • Dose of 0.15 to 1.0 PPM metallic copper.
  • Rate of 1.0 to 6.5 gallons per acre foot.

Macrophytic (Chara/Nitella/Starry Stonewort)

  • Apply higher rates on older, established calcified plants. Apply as close to algae growth as possible.
  • Dose of 0.40 to 1.0 PPM metallic copper.
  • Rate of 2.51.0 to 6.5 gallons per acre foot.
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  • 5 of 5 Stars

    Works excellant

    By Trish on 09/17/2021

    Used this and it works wonderful on algae for removal from ponds

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    2 of 2 people found this review helpful

  • 5 of 5 Stars

    SeClear Algacide

    By James on 03/18/2022

    I ordered 7.5 gallons of SeClear Algaecide. The order was expedited in a timely manner. It was shipped much sooner than I anticipated. The Algaecide was used to treat a one acre lake behind my house. The results were obvious within a few days. I would recommend Do My Own to anyone who needs these products.

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    2 of 2 people found this review helpful

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Questions & Answers

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Is SeClear Algaecide ok to use in a pond with fish?

Per the SEClear Algaeide label you should only treat ½ of the pond at a time, as there will be oxygen loss when killing off the algae and weeds.  To prevent harming the fish you should begin your treatment along the shore and move outward in bands so that the fish can move into untreated water.  Wait 14 days and then treat the other half of the pond.

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How do you mix seclear for your pond

I have a half acre pond

The SeClear Algaecide has a varying range of use rates based on the size of the pond, the average depth, the water flow, type of algae you have, density of the algae, and current ppm of the water. You can review the SeClear Product Label for detailed use instructions in the chart to calculate the amount you need, or you can contact the manufacturer directly for assistance in getting your treatments as accurate as possible. You can reach SePro at 800-419-7779 M-F 8 am to 5pm EST. 

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