10 Best Aquarium Plant Fertilizer

Updated on: June 2021

Best Aquarium Plant Fertilizer in 2021


Seachem Flourish Freshwater Plant Supplement - Aquarium Element and Nutrient Blend 500 ml

Seachem Flourish Freshwater Plant Supplement - Aquarium Element and Nutrient Blend 500 ml
BESTSELLER NO. 1 in 2021

API Leaf Zone Freshwater Aquarium Plant Fertilizer 18 oz Bottle

API Leaf Zone Freshwater Aquarium Plant Fertilizer 18 oz Bottle
BESTSELLER NO. 2 in 2021
  • Aquarium plant food
  • Promotes healthy aquarium plants
  • For freshwater tanks
  • Item Package weight : 1.25 pounds

Seachem Flourish Tabs Growth Supplement - Aquatic Plant Stimulant 10 ct

Seachem Flourish Tabs Growth Supplement - Aquatic Plant Stimulant 10 ct
BESTSELLER NO. 3 in 2021
  • GROWTH TREATMENT: Seachem Flourish Tabs are growth stimulating tablets for plant roots which contain essential trace elements, amino acids, and vitamins.
  • VITAMINS: Seachem Flourish Tabs are rich in iron, manganese, magnesium, calcium, potassium, inositol, choline B12, biotin, and other factors that have been determined to be beneficial to aquatic plant roots.
  • NUTRIENTS: When inserted into the gravel, Seachem Flourish Tabs provide direct, time-released fertilization to the plants’ root zone. Nutrients are slowly made available through enzymatic action of the plants’ roots on the tabs.
  • TANK USE: Insert one Flourish Tab in the gravel for every 10–15 cm (4–6 in.) radius. A standard 10 gallon aquarium requires 6 tabs. Distribute the tablets evenly throughout the gravel bed, pushing each tablet midway into the gravel bed.
  • COMPLETE MAINTENANCE: For optimal plant growth, add new Flourish Tabs to the aquarium once every three to four. Seachem Flourish Tabs will not alter pH, however, in very soft or unbuffered water, they have slightly acidic properties similar to peat moss.

Thrive Planted Aquarium Fertilizer -All in One Planted Tank Liquid Fertilizers - Micro & Macro Nutrient Rich Food for Aquatic Plants - Highly Concentrated for 2500 Gallons of Water - Handy Pump Bottle

Thrive Planted Aquarium Fertilizer -All in One Planted Tank Liquid Fertilizers - Micro & Macro Nutrient Rich Food for Aquatic Plants - Highly Concentrated for 2500 Gallons of Water - Handy Pump Bottle
BESTSELLER NO. 4 in 2021
  • ✅ SPOIL YOUR PLANTS WITH NUTRIENTS: Make your planted aquarium look great and provide your plants with all the essential micro/macronutrients by choosing the NIlocG Aquatics Thrive aquarium plant food!
  • ✅ TREAT 2500 GALLONS OF WATER WITH EASE: The Thrive highly-concentrated liquid fertilizer for aquarium plants will allow you to treat up to 2500 gallons of water with just a single 500ml pump bottle!
  • ✅ KEEP YOUR AQUATIC PLANTS HEALTHY: Ideal for both low and high-tech setups, our water plant fertilizer will not only keep your plants from dying, but also prevent algae from developing in your tank.
  • ✅ SUPER-CONVENIENT PUMP BOTTLE: Take all the fuss out of dosing and adding fertilizer to your planted tank with the Thrive aquarium plants fertilizer. Just pump it in your tank and you're good to go!
  • ✅ GET YOUR LIQUID FERTILIZER RISK-FREE: In the improbable case that you are not 100% satisfied with your NIlocG Aquatics all-in-one planted water tank fertilizer, we promise to issue a full refund!

Seachem Flourish Advance Growth Supplement - Aquatic Plant Aid 500 ml

Seachem Flourish Advance Growth Supplement - Aquatic Plant Aid 500 ml
BESTSELLER NO. 5 in 2021
  • ENHANCER: Seachem Flourish Advance is an advanced formula that contains phytohormones, minerals, and nutrients that dramatically stimulate the growth of both roots and shoots in aquatic plants.
  • GROWTH: The phytohormones play crucial roles in regulating plant growth in a wide range of developmental processes, including cell division, formation and activity of shoot meristems, induction of photosynthesis gene expression, leaf senescence, nutrient mobilization, seed germination, root growth and stress response.
  • ADVANCED FORMULA: With regular use, Seachem Flourish Advance enhances mineral absorption and improves disease resistance. During the first ten to fourteen days after application, Flourish Advance works to stimulate root growth beneath the surface. After this initial induction period, significantly enhanced growth in the leaves and stems of the plants will occur.
  • USE: Shake well before using Seachem Flourish Advance. Use 1 capful (5 mL) for every 80 L (20 US gallons) and be sure to dose daily or as required to maintain plant growth.
  • SAFETY: Seachem Flourish Advance is non-toxic and completely safe for all plant varieties as well as for fish, shrimp, and other aquatic organisms.

Seachem Flourish Tabs Growth Supplement - Aquatic Plant Stimulant 40 ct

Seachem Flourish Tabs Growth Supplement - Aquatic Plant Stimulant 40 ct
BESTSELLER NO. 6 in 2021
  • GROWTH TREATMENT: Seachem Flourish Tabs are growth stimulating tablets for plant roots which contain essential trace elements, amino acids, and vitamins.
  • VITAMINS: Seachem Flourish Tabs are rich in iron, manganese, magnesium, calcium, potassium, inositol, choline B12, biotin, and other factors that have been determined to be beneficial to aquatic plant roots.
  • NUTRIENTS: When inserted into the gravel, Seachem Flourish Tabs provide direct, time-released fertilization to the plants’ root zone. Nutrients are slowly made available through enzymatic action of the plants’ roots on the tabs.
  • TANK USE: Insert one Flourish Tab in the gravel for every 10–15 cm (4–6 in.) radius. A standard 10 gallon aquarium requires 6 tabs. Distribute the tablets evenly throughout the gravel bed, pushing each tablet midway into the gravel bed.
  • COMPLETE MAINTENANCE: For optimal plant growth, add new Flourish Tabs to the aquarium once every three to four months. Seachem Flourish Tabs will not alter pH, however, in very soft or unbuffered water, they have slightly acidic properties similar to peat moss.

ThriveS Aquarium Plant Fertilizer - All in One Shrimp Tank Liquid Fertilizer - Micro & Macro Nutrient Rich Food for Aquatic Plants - Highly Concentrated for 2500 Gallons of Water

ThriveS Aquarium Plant Fertilizer - All in One Shrimp Tank Liquid Fertilizer - Micro & Macro Nutrient Rich Food for Aquatic Plants - Highly Concentrated for 2500 Gallons of Water
BESTSELLER NO. 7 in 2021
  • ✅ KEEP YOUR SHRIMP SAFE AND PLANTS HEALTHY: Ideal for shrimp tank setups, our fertilizer is completely safe for shrimp and other inverts and keep your plants health
  • ✅ SPOIL YOUR PLANTS WITH NUTRIENTS: Make your planted shrimp aquarium look great and provide your plants with all the essential micro/macronutrients by choosing the NIlocG Aquatics ThriveS aquarium plant food!
  • ✅ TREAT 2500 GALLONS OF WATER WITH EASE: ThriveS is specifically formulated for shrimp tanks and will allow you to treat up to 2500 gallons of water with just a single 500ml pump bottle!
  • ✅ SUPER-CONVENIENT PUMP BOTTLE: Take all the fuss out of dosing and adding fertilizer to your planted tank with the ThriveS aquarium plants fertilizer. Just pump it in your tank and you're good to go!
  • ✅ GET YOUR LIQUID FERTILIZER RISK-FREE: In the improbable case that you are not 100% satisfied with your NIlocG Aquatics all-in-one planted water tank fertilizer, we promise to issue a full refund!

Thrive+ Aquarium Plant Fertilizer - All In One Planted Tank Liquid Fertilizers - Micro & Macro Nutrient Rich Food For Aquatic Plants - Highly Concentrated For 2500 Gallons Of Water - Handy Pump Bottle

Thrive+ Aquarium Plant Fertilizer - All In One Planted Tank Liquid Fertilizers - Micro & Macro Nutrient Rich Food For Aquatic Plants - Highly Concentrated For 2500 Gallons Of Water - Handy Pump Bottle
BESTSELLER NO. 8 in 2021
  • ✅ SPOIL YOUR HIGH TECH PLANTS WITH NUTRIENTS: If you have a high tech tank with demanding plants and need all the essential micro/macronutrients choose the NIlocG Aquatics Thrive+ aquarium plant food!
  • ✅ TREAT 2500 GALLONS OF WATER WITH EASE: The Thrive+ highly-concentrated liquid fertilizer for aquarium plants will allow you to treat up to 2500 gallons of water with just a single 500ml pump bottle!
  • ✅ KEEP YOUR AQUATIC PLANTS HEALTHY: Ideal for high-tech setups with a ph under 7, our water plant fertilizer will help keep your demanding plants happy!!
  • ✅ SUPER-CONVENIENT PUMP BOTTLE: Take all the fuss out of dosing and adding fertilizer to your planted tank with the Thrive+ aquarium plants fertilizer. Just pump it in your tank and you're good to go!
  • ✅ GET YOUR LIQUID FERTILIZER RISK-FREE: In the improbable case that you are not 100% satisfied with your NIlocG Aquatics all-in-one planted water tank fertilizer, we promise to issue a full refund!

API ROOT TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box

API ROOT TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box
BESTSELLER NO. 9 in 2021
  • Contains one (1) API ROOT TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box
  • Promotes strong root development for lush plants in freshwater aquariums
  • Contains essential nutrients including iron, potassium and carbon
  • Helps new aquatic plants get off to a vigorous start and to keep established plants flourishing
  • Add tablets to gravel bed every month to ensure best results

ThriveC Aquarium Liquid Plant Fertilizer | All in ONE Fertilizer Designed for Lower TECH Tanks (500ml)

ThriveC Aquarium Liquid Plant Fertilizer | All in ONE Fertilizer Designed for Lower TECH Tanks (500ml)
BESTSELLER NO. 10 in 2021
  • ✅ SPOIL YOUR PLANTS WITH THE RIGHT COMBINATION OF NUTRIENTS FOR LOW/MEDIUM TECH TANKS: Make your planted aquarium look great and provide your plants with all the essential micro/macronutrients by choosing the NIlocG Aquatics ThriveC aquarium plant food!
  • ✅ TREAT 2500 GALLONS OF WATER WITH EASE: The ThriveC concentrated liquid fertilizer for aquarium plants will allow you to treat up to 2500 gallons of water with just a single 500ml pump bottle!
  • ✅ KEEP YOUR AQUATIC PLANTS HEALTHY: Ideal for both low and medium-tech setups, ThriveC is specifically formulated to dose all the essential nutrients without overdosing nitrate and phosphate
  • ✅ SUPER-CONVENIENT PUMP BOTTLE: Take all the fuss out of dosing and adding fertilizer to your planted tank with the ThriveC aquarium plants fertilizer. Just pump it in your tank and you're good to go!
  • ✅ GET YOUR LIQUID FERTILIZER RISK-FREE: In the improbable case that you are not 100% satisfied with your NIlocG Aquatics all-in-one planted water tank fertilizer, we promise to issue a full refund!

The Role of Nutrients in Plant Health: Fertilizers, What They Are, and What They Do

A breakdown of plant fertilizers and the role they play in healthy plants.

Fertilizer Analysis

The analysis of a fertilizer refers to those 3 numbers that are usually repeated and quite prominent in various places on the packaging. The numbers simply indicate the percentages of the primary 3 nutrients in the product, Nitrogen, Phosphate, and Potash. These values will always be listed in the same order, and can be more easily represented by using NPK (N = Nitrogen, P = Phosphorous, K= Potassium). Some products will include other various additives and minor nutrients beyond NPK, some of those will be discussed here.


Nitrogen

Promotes plant growth

Helps in the production of chlorophyll which gives plants their green color

Performs as a protein building block


Phosphorous

Promotes cell division.

Stimulates root growth.

Speeds up plant maturity.


Potassium

Regulates photosynthesis.

Strengthens plant tissue.

Helps promote fruit or flower formation.


Sulfur

Makes nitrogen available to the plant.

Stimulates microorganisms present in the soil.

Density, growth, and color enhancement.


Iron

Assists in chlorophyll production.

Biological process catalyst.

Helps correct micronutrient deficiencies.

Creates a healthy green color to the plant.


Calcium

Neutralizes plant waste.

Improves vigor.

Helps in the uptake of other nutrients.

Stimulates root growth and formation.


Magnesium

Key element in sugar (Carbohydrate) production.

Regulates nutrient uptake.

Carries phosphorous in the plant.

Important for chlorophyll production.


Carbohydrates

Simple starches and sugars that give microorganisms in the soil a quick boost of energy.


Humus

Humus is decomposed organic matter that helps buffer plants against high concentrations of salts in the soil. Humus will help improve the CEC (cation exchange capacity) of a soil and assists in the uptake of phosphorous and micronutrients.


Amino Acids

By buffering heavy metals and salts present in the soil, amino acids help to improve the overall health of a plant and improve microbial activity in the soil.

Understanding the roles that each nutrient in your fertilizer plays will help you better appreciate and determine your garden or turfs needs, allowing for self diagnosis and more informed fertilizer purchases and applications in the seasons to come.

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