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11 models to compare

Do equal aquarium fertilizer doses supply equal nutrients?

Their nutrients differ. Aquarium Co-Op Easy Green supplies broad nutrients; Easy Iron supplies iron. Each label starts at 1 mL per 10 US gal.

Follow the exact dosing label; this finder cannot calculate a safe dose for livestock or water.

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With no preferences selected: LEAF ZONE is one option to compare.

No hands-on testingMethod and sources

LEAF ZONE · first with a product link

  • Nutrient focus: Iron and potassium.
  • Label schedule: Weekly.
What to note:

Label dose per 10 US gal: 5 mL.

View at API

If you choose Broad nutrients for nutrient focus, the first option with a product link becomes Easy Green All-in-One Fertilizer.

11 models compared; 11 have a product-page link.

The picks

5 options to compare

Compare the details that matter to your setup.

An option to compare

LEAF ZONE

Nutrient focus: Iron and potassium.

Key details

  • Label schedule: Weekly.

What to note

Label dose per 10 US gal: 5 mL.

Nutrient focus: Iron and potassiumLabel schedule: WeeklyLabel dose per 10 US gal: 5 mL
See all 3 specs
Nutrient focusIron and potassium
Label scheduleWeekly
Label dose per 10 US gal5 mL

3 of 3 specs available · source checked September 28, 2026 · Source ↗
API · Product page checked September 28, 2026

View at API
Nutrient focus: Broad nutrients

Easy Green All-in-One Fertilizer

Nutrient focus: Broad nutrients.

Key details

  • Label schedule: Once or twice weekly by lighting.

What to note

Label dose per 10 US gal: 1 mL.

Nutrient focus: Broad nutrientsLabel schedule: Once or twice weekly by lightingLabel dose per 10 US gal: 1 mL
See all 3 specs
Nutrient focusBroad nutrients
Label scheduleOnce or twice weekly by lighting
Label dose per 10 US gal1 mL

3 of 3 specs available · source checked September 28, 2026 · Source ↗
Aquarium Co-Op · Product page checked September 28, 2026

View at Aquarium Co-Op
Nutrient focus: Iron

Easy Iron

Nutrient focus: Iron.

Key details

  • Label schedule: One to three times weekly.

What to note

Label dose per 10 US gal: 1 mL.

Nutrient focus: IronLabel schedule: One to three times weeklyLabel dose per 10 US gal: 1 mL
See all 3 specs
Nutrient focusIron
Label scheduleOne to three times weekly
Label dose per 10 US gal1 mL

3 of 3 specs available · source checked September 28, 2026 · Source ↗
Aquarium Co-Op · Product page checked September 28, 2026

View at Aquarium Co-Op
Label schedule: As needed

Flourish Iron

Label schedule: As needed.

Key details

  • Nutrient focus: Iron.

What to note

Label dose per 10 US gal: 1 mL.

Nutrient focus: IronLabel schedule: As neededLabel dose per 10 US gal: 1 mL
See all 3 specs
Nutrient focusIron
Label scheduleAs needed
Label dose per 10 US gal1 mL

3 of 3 specs available · source checked September 28, 2026 · Source ↗
Seachem · Product page checked September 28, 2026

View at Seachem
Label schedule: Once or twice weekly

Flourish

Nutrient focus: Micro and trace nutrients.

Key details

  • Label schedule: Once or twice weekly.

What to note

Label dose per 10 US gal: 0.8333 mL.

Nutrient focus: Micro and trace nutrientsLabel schedule: Once or twice weeklyLabel dose per 10 US gal: 0.8333 mL
See all 3 specs
Nutrient focusMicro and trace nutrients
Label scheduleOnce or twice weekly
Label dose per 10 US gal0.8333 mL

3 of 3 specs available · source checked September 28, 2026 · Source ↗
Seachem · Product page checked September 28, 2026

View at Seachem

Comparing LEAF ZONE · Easy Green All-in-One Fertilizer

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The facts that differ

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0 identical specs shown. Details that do not apply to these models are omitted.

Published specification comparison
SpecLEAF ZONENo preferences selected.Easy Green All-in-One FertilizerNo preferences selected.
Nutrient focusIron and potassiumBroad nutrients
Label scheduleWeeklyOnce or twice weekly by lighting
Label dose per 10 US gal5 mL1 mL

LEAF ZONE

No preferences selected.

Nutrient focus
Iron and potassium
Label schedule
Weekly
Label dose per 10 US gal
5 mL

Easy Green All-in-One Fertilizer

No preferences selected.

Nutrient focus
Broad nutrients
Label schedule
Once or twice weekly by lighting
Label dose per 10 US gal
1 mL

LEAF ZONE

View at API

Easy Green All-in-One Fertilizer

View at Aquarium Co-Op

Compare all 11 models

— = no verified listing yet. The published order is independent of links.

All models and their decision specs
ProductHow it comparesKey specCompareAction
LEAF ZONE
Nutrient focus: Iron and potassium; Label schedule: Weekly.
Nutrient focus: Iron and potassiumView at API
Easy Green All-in-One Fertilizer
Compared with LEAF ZONE: nutrient focus, Broad nutrients vs Iron and potassium.
Nutrient focus: Broad nutrientsView at Aquarium Co-Op
Easy Iron
Compared with LEAF ZONE: nutrient focus, Iron vs Iron and potassium.
Nutrient focus: IronView at Aquarium Co-Op
Easy Potassium
Compared with LEAF ZONE: nutrient focus, Potassium vs Iron and potassium.
Nutrient focus: PotassiumView at Aquarium Co-Op
Aquarium Plant Food
Compared with LEAF ZONE: nutrient focus, Broad nutrients vs Iron and potassium.
Nutrient focus: Broad nutrientsView at Aqueon
Flourish
Compared with LEAF ZONE: nutrient focus, Micro and trace nutrients vs Iron and potassium.
Nutrient focus: Micro and trace nutrientsView at Seachem
Flourish Iron
Compared with LEAF ZONE: nutrient focus, Iron vs Iron and potassium.
Nutrient focus: IronView at Seachem
LEAF ZONE
Nutrient focus: Iron and potassium; Label schedule: Weekly.
Nutrient focus: Iron and potassium
View at API
Easy Green All-in-One Fertilizer
Compared with LEAF ZONE: nutrient focus, Broad nutrients vs Iron and potassium.
Nutrient focus: Broad nutrients
View at Aquarium Co-Op
Easy Iron
Compared with LEAF ZONE: nutrient focus, Iron vs Iron and potassium.
Nutrient focus: Iron
View at Aquarium Co-Op
Easy Potassium
Compared with LEAF ZONE: nutrient focus, Potassium vs Iron and potassium.
Nutrient focus: Potassium
View at Aquarium Co-Op
Aquarium Plant Food
Compared with LEAF ZONE: nutrient focus, Broad nutrients vs Iron and potassium.
Nutrient focus: Broad nutrients
View at Aqueon
Flourish
Compared with LEAF ZONE: nutrient focus, Micro and trace nutrients vs Iron and potassium.
Nutrient focus: Micro and trace nutrients
View at Seachem
Flourish Iron
Compared with LEAF ZONE: nutrient focus, Iron vs Iron and potassium.
Nutrient focus: Iron
View at Seachem
11 catalog models

How the comparison works

Your choices are compared with each model’s product details. A missing or conflicting value stays unknown and cannot satisfy a choice you select. The starting order helps you browse; it does not rate real-world performance.

Source dates appear with each link below. A source date does not confirm today's price or stock.

Finder methodologyReport a correction
Sources for all 11 models

Choose the nutrient job, then the dosing routine

Seachem Flourish supplies micro and trace nutrients; Flourish Iron targets iron. Aquarium Co-Op has a broad-nutrient formulation alongside its targeted supplements. Choose the nutrient job before comparing liquid volume; a targeted supplement is not automatically a replacement for a broader formulation. These roles are summaries of maker descriptions, not complete ingredient profiles.

Schedules also differ: Flourish Iron says as needed, while API LEAF ZONE says weekly. Reading fertilizer labels rather than measuring plant growth leaves livestock safety outside this comparison. Keep the conditions attached to a schedule, including lighting guidance for Aquarium Co-Op's broad-nutrient formulation.

Compare label volume without assuming equal strength

The original label doses range from 1 to 10 mL, but they refer to different water volumes. Seachem Flourish pairs 5 mL with 60 US gal; API LEAF ZONE pairs 5 mL with 10 US gal. Equal spoonfuls therefore do not represent equal label instructions.

The dose column scales a label dose to the same water volume. It does not equalize nutrient concentrations or turn a conditional schedule into a weekly total. Read the dosing conditions. Follow the formulation's full directions for your aquarium; this finder does not calculate a tank-specific dose.

Before you buy

Does a smaller dose mean a better fertilizer?

The products contain different nutrients and concentrations. The column only compares the volume of liquid in one maker-listed dose. Aquarium Co-Op Easy Green supplies broad nutrients and Easy Iron supplies iron; each label starts at 1 mL per 10 US gal. The nutrient role is different. Easy Green suits a broad-formula comparison, while Easy Iron is a supplement. Equal liquid volume does not mean equal nutrients, and this finder cannot calculate a safe dose for your livestock or water.

Can a single-nutrient supplement replace a broad fertilizer?

This finder does not treat them as substitutes. Use the nutrient-focus filter and read the maker’s complete directions for the formula you choose.

Does this tool calculate a safe dose for your aquarium?

It compares published label information. It does not account for your water chemistry, livestock, plant growth, or other supplements.