SKU: 26413658812
potassium rich fertilizer for plants

potassium rich fertilizer for plants Aquarium Co-Op Easy Potassium (120 ml)

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Description

potassium rich fertilizer for plants Aquarium Co-Op Easy Potassium (120 ml)Potassium supplement for enhanced plant growth Easy to use measuring cap for accurate dosing Safe for fish, shrimp, and snails Potassium is a very important macronutrient for planted aquariums. If aquatic plants don't get enough of this nutrient, they can develop distinctive pinholes that are sometimes rimmed with brown or yellow. While Easy Green all in one fertilizer already contains plenty of potassium for most planted tanks, Easy Potassium is a

  • Potassium supplement for enhanced plant growth
  • Easy-to-use measuring cap for accurate dosing
  • Safe for fish, shrimp, and snails

Potassium is a very important macronutrient for planted aquariums. If aquatic plants don't get enough of this nutrient, they can develop distinctive pinholes that are sometimes rimmed with brown or yellow. While Easy Green all-in-one fertilizer already contains plenty of potassium for most planted tanks, Easy Potassium is a useful supplemental fertilizer for people who are running high light planted tanks with CO2 injection or have lots of potassium-hungry plants (like java fern and anubias). 

Please note that we have changed over to dosing caps. Pump heads are still available for purchase. 

1. For the 500 ml (16.9 oz) bottle:
— Use the measuring cap to dose(1 ml) per 10 gallons of water, 1-3 times a week
— Each 1ml adds 2 ppm potassium to 10 gallons of water
— Treats 5,000 gallons total

2. For the 120 ml (4 oz) bottle:
— Dose 2 drops per gallon of water, 1-3 times a week
— Each dose of 2 drops adds 2 ppm potassium to 1 gallon of water.
— Treats 1,200 gallons total
— Great for nano tanks under 10 gallons

When in doubt, start low and increase the dosage after 2 weeks. 

Guaranteed Analysis: Soluble Potash (K2O) 9.12%
— Derived from potassium sulfate and potassium citrate
— NPK rating 0 - 0 - 9.12

Notes:
— Please store the fertilizer upright in a cool, dry location away from children. The pump head (if using an older version) and dropper cap are not leak proof. For optimal shelf life, store out of light.
— If you have the pump head version, keep the tip of the pump clean of debris. Wiping the pump tip after each use helps prevent a mineral crust from developing. If the pump gets blocked up, it can cause the fertilizer to spray in a random direction, so run the pump head under warm water until the blockage melts away.
— Warning: Fertilizer can be irritating if it gets into your eyes, nose, or mouth, and it can cause stomach upset if swallowed. If you get Easy Potassium on your skin, rinse it off. If you get it in your eyes or mouth, rinse thoroughly for 15 minutes. For USA customers,  reference the poison.org website. For Canadian customers, reference dpic.org

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 26413658812

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CerisK
Whiting, US
★★★★★ 4
Decent 3oz measurer
Color: Black, Color: Black
I like it, it works. However it is a bit heavy on the handle side. You think somebody like maestri house would get it correct. Could have used heavier metal on the measuring cup. Anyways I keep it it's nice.
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Reviewed in the United States on January 12, 2026
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Irishjude
Dallas, US
★★★★★ 5
Expresso
Color: Silver
I like it. Each coffee perfectly measured
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Reviewed in the United States on January 25, 2026
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William Cummins
Dallas, US
★★★★★ 5
Very useful
Color: Black
Very useful addition to my expresso brewing
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Reviewed in the United States on January 23, 2026
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Big Foot
San Leandro, US
★★★★★ 3
Needs to be a little larger for two shots
Color: Silver
Nice quality but overflows with two shots of espresso from my machine.
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Reviewed in the United States on January 13, 2026
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M. Altvater
Carnegie, US
★★★★★ 5
Coffee!
Color: Silver
Holds coffee, looks nice
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Reviewed in the United States on October 19, 2025

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