Overview
Flourish Excel™ is a source of bioavailable organic carbon. All plants require a source of carbon. This is typically obtained from CO2, but, may also be derived from simple organic compounds (such as photosynthetic intermediates). The use of either CO2 injection or Flourish Excel™ does not necessarily negate the use of the other. Because the processes of producing photosynthetic intermediates and building onto them occur simultaneously, one can derive a substantial benefit with the use of Flourish Excel™ either alone or in conjunction with CO2 . The combination is particularly ideal for situations when continuing to add CO2 could result in dangerously low pH levels. Flourish Excel™ also has iron reducing properties which promote the ferrous state of iron (Fe+2), which is more easily utilized by plants than ferric iron (Fe+3).
The reason plants need CO2 is to produce longer chain carbon compounds also known as photosynthetic intermediates. Photosynthetic intermediates includes compounds such as ribulose 1,5-bisphosphate, and 2-carboxy-3-keto-D-arabinitol 1,5 bisphosphate. Although the names are complicated, the structures are quite simple (5 carbon chains). Flourish Excel™ does not contain these specific compounds per se, but one that is quite similar. By dosing with Flourish Excel™ you bypass the involvement of CO2 and introduce the already finished, structurally similar compounds. It is in its structural similarity that Flourish Excel™ is able to be utilized in the carbon chain building process of photosynthesis. Simple chemical or enzymatic steps can easily convert it to any one to any one of the above named compounds (or a variety of others).
Sizes: 50 mL, 100 mL, 250 mL, 500 mL, 2 L, 4 L
Directions
On initial use or after a major (> 40%) water change, use 1 capful (5 mL) for every 40 L (10 US gallons). Thereafter use 1 capful for every 200 L (50 US gallons) daily or every other day. For smaller dosing please note that each cap thread is approximately 1 m
CAUTION: Do not eat drink or get into eyes. In case of eye exposure, promptly & thoroughly wash eyes with water & seek medical attention.
Boost your aquarium plant growth effortlessly with the Dennerle Plants CO2 Starter Kit. This complete biosystem uses natural fermentation to provide a steady supply of CO2, ensuring lush and healthy aquatic plants.
Designed specifically for small aquariums, it is a safe, effective, and economical alternative to pressurized gas systems.
Key Features
Long-Lasting Supply: Provides continuous CO2 for up to 2 months (depending on room temperature, ideally 20°C - 25°C).
Eco-Friendly: Works on the principle of natural yeast fermentation.
Simple Setup: No complicated equipment required. Just mix, connect, and grow.
Safe & Effective: A hassle-free way to maintain optimal CO2 levels for your tank environment.
What’s Included in the Box
1x Bio CO2 Bottle
1x CO2 Powder Mix
1x Transparent CO2 Tubing (4/6mm, 100cm long)
1x CO2 Diffuser (17mm membrane, 14cm long)
2x Suction Cups
5x CO2 Activator packets
Instruction Manual
Quick Start Guide
Mix the Bio CO2 powder with 300ml of water and let it rest for 24 hours.
Add the Bio Activator with an additional 200ml of water.
Connect the CO2 diffuser to the hose, and you are ready to go!
Tropica Premium Nutrition 300 ml
Perfect Balance for Well-Stocked Aquariums If your aquarium has many fish, they are already providing plenty of Nitrogen and Phosphorus naturally through waste. Adding more can lead to algae outbreaks. However, your plants still crave Iron and Magnesium to thrive.
Premium fertilizer is the missing link. It creates a balanced ecosystem by providing only the vital micronutrients your plants are missing, without adding the nitrates and phosphates they already have.
Key Benefits:
• Algae Control: Formula contains NO Nitrogen or Phosphorus, preventing nutrient overload.
• Vibrant Colors: Rich in Iron and Manganese to fix yellowing leaves (chlorosis) and restore lush green/red colors.
• Easy Dosing: The integrated pump bottle ensures accurate measurement without the mess.
Ideal For:
• Aquariums with a high fish population.
• Tanks with slow-growing plants.
• Fixing pale or transparent leaves (often seen in plants like Echinodorus bleheri).
Bioavailable organic carbon source for the planted aquarium
Use as an alternative to CO2 injection or in addition to it
Introduces photosynthetic intermediates
When you are looking at creating your first planted aquarium you have to initially decide whether you want to do High tec , or low tech , with regards to the infusion of CO2 gas into the water . If you went for the low tech solution wouldn't it be good to have a compromise between and all in CO2 system and a slow growth set up ? Well your prayers have now been answered in the product which is " Seachem Flourish Excel "
One of the first things young children are taught at school is that animals breath Oxygen and exhale CO2 , while plants take in CO2 during the day and release Oxygen . This is called photosynthesis , where plants used the energy in sunlight to convert Co2 and water to sugar and oxygen . The more Co2 in the air means the more plant growth there is
Flourish Excel is an additive for aquascaped aquariums that you can use as an alternative to CO2 injection . You simply add the Flourish Excel liquid each day to your aquarium and it becomes the carbon source for your plants . We don't claim that Flourish Excel would have the same growth rate as using CO2 but it is a great option available to you at a fraction of the cost , you just need to be a little more patient . For those of you already using a CO2 unit the addition of flourish excel into your aquarium could see a substantial benefit and is really useful for situations when continuing to add CO2 could result in very high pH levels.
Another benefit of Seachem Flourish Excel is that it has iron reducing properties which enhance the ferrous state of iron which is more easily utilized that ferric iron (Iron can exist in a number of different energy states but basically it occurs most frequently as Fe3+ (ferric)this is useless to plants as they can’t absorb it, plants need iron as Fe2+ (ferrous)
On initial use or after a major (> 40%) water change, use (5 mL) for every 40L
Optimize your aquarium's plant growth with this Premium CO2 Diffuser. Designed with a high-quality 17mm ceramic membrane, it atomizes CO2 into a particularly fine mist, ensuring the gas is efficiently dissolved and distributed to every plant in your tank.
Key Features
Integrated Bubble Counter: The chamber below the disc fills with water, allowing you to easily monitor your CO2 injection rate.
High Efficiency: Fine mist ensures maximum CO2 absorption by the water.
Complete Set: Includes a U-Pipe to prevent hose kinking over the aquarium rim.
Versatile Fit: Suitable for aquariums from 20 to 200 Liters.
Package Contents
1x CO2 Diffuser (17mm membrane, 14cm length)
1x Glass U-Pipe (Fits 5-10mm glass thickness, 5cm length)
2x Suction Cups
Fits standard 4/6mm CO2 tubing.
Installation Tips
Soak Before Use: We recommend soaking the diffuser in water before connecting it. This ensures an even mist and silent operation.
Fill the Counter: Fill the chamber below the membrane with water to use the bubble counter function.
Secure: Use the included suction cups to fix the diffuser in place.
Pro Tip: Rotate your suction cups! If a cup becomes milky, let it dry out completely and it will turn transparent again.
Keep your aquarium plants lush and healthy with the Dennerle Bio CO2 Starter Refill. This package is the official refill set for the Dennerle Bio CO2 Starter Kit, providing an additional 60 days of biological CO2 production.
Why Choose This Refill?
Cost-Effective: The most economical way to continue CO2 fertilization without buying a new system.
Complete Set: Contains everything you need to restart the fermentation process.
Consistent Growth: Ensures there is no gap in nutrient supply for your aquatic plants.
Package Contains
1x CO2 Powder Mix
5x CO2 Activator packets
Maintenance Tip
For optimal CO2 levels, refill the CO2 Activator every 14 days or whenever production drops below 5 bubbles per minute.
Please Note: This is a refill pack only. The plastic bottle, hose, and diffuser are NOT included (sold separately in the Starter Kit).
Dennerle Plants Bio CO2 Starter Kit – Eco-Friendly System for Small AquariumsProduct Description: Boost your aquarium plant growth effortlessly with the Dennerle Plants CO2 Starter Kit. This complete biosystem uses natural fermentation to provide a steady supply of CO2, ensuring lush and healthy aquatic plants. Designed specifically for small aquariums, it is a safe, effective, and economical alternative to pressurized gas systems.Key Features:
Long-Lasting Supply: Provides continuous CO2 for up to 2 months (depending on room temperature, ideally 20°C - 25°C).
Eco-Friendly: Works on the principle of natural yeast fermentation.
Simple Setup: No complicated equipment required. Just mix, connect, and grow.
Safe & Effective: A hassle-free way to maintain optimal CO2 levels for your tank environment.
What’s Included in the Box:
1x Bio CO2 Bottle
1x CO2 Powder Mix
1x Transparent CO2 Tubing (4/6mm, 100cm long)
1x CO2 Diffuser (17mm membrane, 14cm long)
2x Suction Cups
5x CO2 Activator packets
Instruction Manual
Quick Start Guide:
Mix the Bio CO2 powder with 300ml of water and let it rest for 24 hours.
Add the Bio Activator with an additional 200ml of water.
Connect the CO2 diffuser to the hose, and you are ready to go!
The EasyLife EasyCarbo 250ml Plant Fertiliser is a product designed for use in aquariums to promote healthy plant growth. Specifically formulated to target algae and boost CO2 levels, this plant fertiliser is suitable for fresh water environments. With the EasyLife brand known for its quality products in the fish and aquarium category, this treatment is a reliable choice for maintaining a thriving aquatic ecosystem.
Unlock the full potential of your planted aquarium with API® CO2 BOOSTER. Carbon deficiency is a major reason for weak plant growth, but this easy-to-use liquid supplement provides a simple solution.
CO2 BOOSTER delivers essential liquid carbon to support photosynthesis, helping plants convert light into lush new growth. It can be used alone or alongside pressurized CO2 systems for maximum effect.
Key Benefits
Essential Carbon: Provides simple organic carbon compounds, critical for plant tissue formation.
Safe & Stable: Safe for freshwater fish and does not affect pH levels.
Flexible Use: Perfect for aquariums without CO2 injection, or as a booster for high-tech setups.
Dosage Instructions
Add 1 ml per 38 litres of aquarium water daily.
Pro Tip: For best results, dose in the morning right after your aquarium lights turn on, so plants can utilize the carbon throughout their photosynthesis cycle.
Unlock the full potential of your aquascape with Yokuchi Gen C Liquid Carbon Fertilizer (400ml). Carbon is the fundamental building block of life for aquarium plants, constituting over 40% of their dry mass. Without adequate carbon, plants cannot grow or perform photosynthesis effectively.
Gen C is a premium solution designed to supply this essential macroelement in a highly bioavailable liquid form.
Why Choose Gen C?
Essential Nutrition: Provides the primary building block required for plant tissue formation.
Boosts Photosynthesis: Ensures robust plant development and deeper, more vibrant colors.
Algae Control: Regular use of liquid carbon supplements helps inhibit algae growth while boosting plant health.
Convenient Source: An excellent alternative or supplement to pressurized CO2 gas systems.
Product Specifications
Brand: Yokuchi
Type: Liquid Carbon Fertilizer
Volume: 400ml (High capacity for long-term use)
Application: Suitable for all planted aquariums
CRYPTO-PLUS is a specialized formula that enhances nutrient and light absorption for your aquarium plants. Unlike standard fertilizers, it is designed to help plants reach their full potential by optimizing how they utilize existing resources.
Key Benefits
Rapid Results: Noticeable improvements can appear within days, particularly in red-leafed plants.
Plant Restoration: Helps restore damaged or translucent areas and smooths torn edges on leaves.
Enhanced Uptake: Boosts the absorption of nutrients and light, promoting vibrant coloration and growth.
Disease Prevention: Strengthens plant structure to help prevent disease.
Safe Formula: Fully safe for all tropical and coldwater fish.
Dosage Calculator
To ensure you are dosing the correct amount for your specific aquarium size, please use the official calculator:
Click here for the eSHa Dosage Calculator
Yokuchi Gen C Liquid Carbon Fertilizer (400ml) - Essential CO2
Source for Plants
Description: Unlock the full potential of your
aquascape with Yokuchi Gen C Liquid Carbon Fertilizer (400ml). Carbon is
the fundamental building block of life for aquarium plants, constituting over 40%
of their dry mass. Without adequate carbon, plants cannot grow or perform
photosynthesis effectively.
Gen C is a premium solution designed to supply this
essential macroelement in a highly bioavailable liquid form.
Why Use Gen C?
Essential
Nutrition: Provides the primary building block required for plant
tissue formation.
Boosts
Photosynthesis: Ensures robust plant development and deeper, more
vibrant colors.
Algae
Control: Liquid carbon supplements often help inhibit algae growth
while boosting plants (a common benefit of liquid carbon).
Convenient
Source: An excellent alternative or supplement to pressurized CO2 gas
systems.
Specifications:
Brand:
Yokuchi
Type:
Liquid Carbon Fertilizer
Volume:
400ml (High capacity for long-term use)
Application:
Suitable for all planted aquariums
Premium Potassium Supplement for Planted Aquariums
Flourish Potassium™ 500ml contains 50,000 mg/L of potassium, specifically formulated for the natural planted aquarium. Potassium is an essential macronutrient required for strong plant growth, healthy leaves, and robust root development.
In fast-growing aquascapes or aquariums with low-mineral source water, potassium can quickly become depleted — leading to poor plant health. This supplement helps prevent deficiency and keeps your plants thriving.
✅ Why Choose Flourish Potassium?
✔ Highly concentrated – 50,000 mg/L potassium
✔ Targets potassium without affecting nitrogen (N) or phosphorus (P)
✔ Derived from potassium sulfate (does not alter NPK balance)
✔ Ideal for aquascaping & high-tech planted tanks
✔ Suitable for freshwater planted aquariums
Unlike potassium nitrate or potassium phosphate, this formula allows you to adjust potassium levels without changing nitrogen or phosphorus levels, making precise nutrient control easy.
🌱 Prevents Common Potassium Deficiency Signs:
Yellowing (chlorosis) in older leaves
Brown/dead patches (necrosis)
Pinholes in leaves
Weak stems and roots
Slow or stunted growth
📏 Dosing Instructions:
Use 1 capful (5 mL) per 125L (30 US gallons)
Raises potassium by 2 mg/L per dose
Dose 2–3 times per week or as needed
📦 Product Details:
Size: 500ml
Suitable for: Freshwater planted aquariums
Brand: Seachem
Long-lasting concentrated formula
🌿 Keep your aquarium plants lush, vibrant, and growing at their full potential.
EASYLIFE PROFITO Fertilizer is a premium, all-in-one liquid plant fertiliser designed for thriving freshwater planted aquariums. Developed by Easy-Life, ProFito delivers a carefully balanced blend of essential macro and micronutrients to support lush growth, vibrant colour, and strong root and leaf development.
Ideal for aquascapes, nature aquariums, and high-end planted displays, ProFito is widely trusted by hobbyists and professional aquascapers alike.
🌱 Why Choose EASYLIFE PROFITO?
✔ Complete All-in-One Formula – Contains iron, potassium, manganese and trace elements
✔ Promotes Strong Plant Growth – Supports healthy leaves and robust stems
✔ Enhances Vibrant Colouration – Boosts natural green and red tones
✔ Highly Concentrated – Economical and long-lasting
✔ Nitrate & Phosphate Free – Helps reduce algae risk
✔ Suitable for All Freshwater Planted Aquariums
💧 What Does ProFito Contain?
Iron (Fe) for deep green foliage
Potassium (K) for cell strength and growth
Manganese, Boron, Zinc & trace minerals
Stabilised chelated nutrients for optimal absorption
This balanced nutrient profile ensures your aquatic plants receive everything they need without excess waste in the water column.
📏 Dosage Instructions
Standard Dose: 10ml per 100 litres weekly
For heavily planted or high-light aquariums, dosage may be adjusted accordingly
Shake well before use
For best results, combine with CO₂ injection and good lighting in advanced aquascapes.
🌊 Perfect For:
Nature-style aquascapes
Dutch-style planted tanks
Low-tech & high-tech planted aquariums
Aquascaping hobbyists & professionals
📦 Available Sizes
250ml
500ml
1000ml
Premium Iron Supplement for Planted Aquariums | Fast Foliar Absorption | Prevents Chlorosis
💚 Restore Vibrant Green Growth
Iron is immobile in plants, meaning it cannot be transferred from older leaves to new growth. When iron is deficient, symptoms appear first in young leaves, causing:
✔ Yellowing (chlorosis)
✔ Pale emerging leaves
✔ Short, slender stems
✔ Progressive lightening of new growth
Flourish Iron™ provides iron in the preferred ferrous (+2) form, allowing rapid uptake and correction of deficiencies in planted aquariums.
🔬 Why Iron Form Matters
When selecting an iron supplement, the oxidation state is critical:
❌ Ferric Iron (Fe³⁺)
Only soluble below pH 5.5
Precipitates in typical aquarium pH
Settles into substrate
Not available for foliar absorption
Often chelated as Iron-EDTA
Requires plant energy to reduce to ferrous form
✅ Ferrous Iron (Fe²⁺)
Soluble at all aquarium pH levels
Immediately bioavailable
Easily absorbed through leaves
No energy wasted on reduction
Flourish Iron™ uses a ferrous iron gluconate complex (not a chelate) for superior availability.
🌱 Advanced Formula Advantage
Highly Concentrated – 10,000 mg/L Ferrous Iron
Unlike iron-EDTA products:
✔ Weaker bonding than EDTA = better release
✔ Faster plant uptake
✔ No physiological energy drain
✔ More effective foliar feeding
✔ Provides additional carbon via gluconate
Despite common myths, ferrous gluconate is safe for fish and plants when used as directed.
🐠 Ideal For
High-light planted aquariums
CO₂ injected systems
Red plant enhancement
Rapid growth aquascapes
Correction of iron chlorosis
Professional aquascaping layouts
Perfect for gallery-style planted systems such as Nature Aquariums, Iwagumi layouts, Dutch style tanks, and contemporary aquascapes.
📌 Key Features
• 10,000 mg/L ferrous iron gluconate
• Immediate bioavailability
• Prevents yellowing in new growth
• Supports chlorophyll production
• Safe for freshwater planted tanks
• Professional-grade concentration
🌿 Symptoms of Iron Deficiency
If you notice:
Yellow new leaves with green veins
Increasing paleness in each new leaf
Weak stem structure
Your plants are likely iron deficient — supplement promptly for optimal results.
