The Pond Guy InstaFix Algae Control Liquid – EPA-Registered for Koi Ponds & Fountains

Safe, Effective, Fast-Acting Green Water & String Algae Control Solution

  • Fast-Acting & Easy-to-Use – Quickly clears algae for cleaner, clearer water.
  • EPA-Registered Algaecide – Targets green water and string algae in ponds.
  • Works Best with Aeration – Ideal for use with waterfalls, fountains & aerators.
  • Combats Green Water – Perfect for ponds, water gardens, fountains & birdbaths.
  • Fish & Plant Friendly – Formulated to be gentle on pond life when used as directed.
Starting at $12.99

Cannot Ship to AK, HI, PR

200293 - 2.5 Gallon InstaFix is on Back Order Until 6/15/26

Four sizes of InstaFix Algae Control with green and blue labels. View Product Image
Four sizes of InstaFix Algae Control with green and blue labels. View Product Image
InstaFix Algae Control 16-ounce bottle with green and blue label. View Product Image
InstaFix Algae Control 32-ounce bottle with green and blue label. View Product Image
InstaFix Algae Control 1-gallon jug with green and blue label. View Product Image
InstaFix Algae Control 2.5-gallon jug with green and blue label. View Product Image
InstaFix Algae Control label with dosage instructions. View Product Image
A person pouring InstaFix into the dosage cup, with text: “1 oz treats 360 gallons”. View Product Image
A person pouring InstaFix into a pond, with text:
Split image of string algae, green water, and blanketweed, with text: “Treats algae”. View Product Image
A before & after image showing a koi pond change from heavy string algae blooms to clean and clear, with text: “Kills tough algae”. View Product Image
Two waterfalls and a basin fountain, with text: “For use in: Water Gardens, Fountains, Pondless Water Features”. View Product Image
A person pulling a handful of algae from a water garden, with text: “Reduce algae growth”. View Product Image
Koi swimming in crystal-clear water, with text: “Improves poor water conditions”. View Product Image
  • Fast-Acting & Easy-to-Use – Quickly clears algae for cleaner, clearer water.
  • EPA-Registered Algaecide – Targets green water and string algae in ponds.
  • Works Best with Aeration – Ideal for use with waterfalls, fountains & aerators.
  • Combats Green Water – Perfect for ponds, water gardens, fountains & birdbaths.
  • Fish & Plant Friendly – Formulated to be gentle on pond life when used as directed.
Starting at $12.99

Cannot Ship to AK, HI, PR

200293 - 2.5 Gallon InstaFix is on Back Order Until 6/15/26

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