API Leaf Zone vs Seachem Flourish

Aquarium plants are a beautiful addition to any fish tank, and they can provide valuable hiding places and shelter for your fish. But keeping live plants healthy can be a challenge, especially if you have high levels of nitrate or phosphate in your water. Aquarium plant growth can be enhanced by the use of different types of aquarium supplements.

Overview of API Leaf Zone

Brief History of API Company

API is a company that produces aquarium products. API has been in business for over 50 years and produces a wide variety of products including water conditioners, filtration systems, fish food, and more. API’s products are trusted by aquarists around the world and are known for their quality and effectiveness. Whether you are a beginner or an experienced aquarist, API has the right product for your needs.

Features of API Leaf Zone

API Leaf Zone is a liquid plant fertilizer that is designed to provide nutrients for plants.

It is made up of a blend of nitrogen, phosphorus, and potassium, which are essential nutrients for plant growth.

This fertilizer can be used on both indoor and outdoor plants, and it is safe for use around children and pets.

It can be used on a variety of plants to help them grow strong and healthy.

API Leaf Zone is designed to be used as a foliar spray, which means it is applied directly to the leaves of plants.

It contains a high concentration of nitrogen, which helps promote leafy growth.

It is easy to use, simply add it to the water when you set up your aquarium or pond.


• It is inexpensive to purchase;
• It is promptly available in the market;
• It contains potassium and iron which help to produce lush green leaves;
• It helps to produce strong and hardy plants with colorful leaves;
• It helps to prevent yellow, decaying leaves;
• It contains necessary plant nutrients which are rapidly absorbed through plant leaves;
• It helps to release simple carbon compounds slowly which is an essential element of the photosynthetic process of plants;
• API leaf zone helps in cell pressure maintenance;
• It is easy to use and suitable for saltwater, freshwater, or reef aquarium;
• This product is beginner friendly to use;
• It is best for low-tech planted tanks;


• This supplement only contains iron and potassium;

Overview of Seachem Flourish

Brief History of Seachem Company

Seachem is a leading manufacturer of aquarium and pond products. They offer a wide range of products, from filters and pumps to fish food and supplements available, and their prices are generally reasonable. The quality of their products is generally good, and they have a good reputation among hobbyists. Overall, Seachem is a good company that also has a strong commitment to customer service, offering free shipping on orders over $75 and a 60-day money-back guarantee.

Features of Seachem Flourish

Seachem Flourish is a comprehensive plant supplement. It is designed to provide nutrients for both aquatic and terrestrial plants.

It is a complete, balanced fertilizer that contains all of the essential nutrients needed for plant growth.

Seachem Flourish also contains trace elements and iron, which are important for plant health.

This fertilizer is easy to use and can be applied directly to the soil, leaves or water once a week.

Seachem Flourish is safe for use around children and pets, and it will not harm your plants if used as directed, making it an ideal choice for those looking for an eco-friendly option.


• Seachem Flourish is made using an advanced formula which contains ingredients including minerals, phytohormones, and nutrients for the strong growth of plants;
• It stimulates the plant’s growth with roots and shoots;
• Phytohormones regulate the different developmental processes of plants such as cell division, root growth, seed germination, etc.;
• It helps to enhance the plant’s disease resistance;
• It is non-toxic and safe for various plants species, fish, shrimp, and other aquatic organisms;
• It is a complete fertilizer supplement for the planted tanks;
• It contains trace elements, microelements, and other nutrients for proper plant growth;


• It does not contain substantial levels of phosphorus or nitrogen;

Composition of Seachem Flourish

IngredientsPercentage (%)
Total Nitrogen0.07%
Available Phosphate ( P2O5)0.01%
Calcium (Ca)0.14%
Sulfur (S)0.28%
Chlorine (Cl)1.15%
Soluble Potash0.37%
Magnesium (Mg)0.11%
Boron (B)0.009%
Cobalt (Co)0.0004%
Iron (Fe)0.32%
Molybdenum (Mo)0.0009%
Sodium (Na)0.13%
Copper (Cu)0.0001%
Manganese (Mn)0.0118%
Zinc (Zn)0.0007%

What Are The Differences Between API Leaf Zone and Seachem Flourish?

Aquatic plants are often grown in aquariums or ponds. There are a variety of products on the market that can be used to help promote plant growth. Two such products are API Leaf Zone and Seachem Flourish. Both products contain nutrients that plants need for healthy growth, both can help you achieve success with aquarium plants but there are some differences between them.

API Leaf Zone is a liquid supplement that is added to the water weekly. It contains iron, magnesium, potassium, and other minerals that plants need for strong growth. While Seachem Flourish is a powder/liquid fertilizer that is added to the water monthly. It also contains iron and other minerals, as well as trace elements that are important for plant health.

Both products can help to correct nutrient deficiencies and promote healthy plant growth.

Both products have been shown to be effective in promoting healthy plant growth in aquariums. Which one you choose may depend on personal preference or what type of plants you are growing.

Seachem Flourish is intended for use in the aquarium or terrarium and can be added to the water or soil. It has a lower concentration of nitrogen than API Leaf Zone but also contains other essential nutrients like iron and potassium.

If you are looking for rapid leafy growth, API Leaf Zone may be a better choice. Because API Leaf Zone is designed specifically for use with foliage plants. It contains a higher concentration of nitrogen than Seachem Flourish, which makes it ideal for promoting leafy growth. It also includes iron and other micronutrients that help to keep foliage plants looking green and healthy.

If you want to provide comprehensive nutrition for your plants, in this case, Seachem Flourish may be a better option. Seachem Flourish is an all-purpose plant fertilizer that can be used on both foliage and flowering plants. It has a lower concentration of nitrogen than API Leaf Zone, making it better suited for promoting overall plant growth rather than just leafy growth. However, it still contains enough nitrogen to support healthy leaves, along with phosphorus and potassium which are essential for flower production.

Concluding Remarks

Aquarium plant growth can be enhanced by the use of different types of aquarium supplements. API Leaf Zone and Seachem Flourish can be effective at promoting plant growth, but you may want to use one or the other depending on your specific needs. So, what are the differences between these two products? Well, they both contain similar ingredients and perform the same basic function – providing nutrients for aquatic plants. However, some hobbyists feel that Seachem Flourish works better than API Leaf Zone because it dissolves more quickly in water and thus gets absorbed by plant roots more quickly.

You might also read: Seachem Flourish Root Tabs Vs API Root Tabs: A Complete Comparison