Seachem Flourish Excel™ is a liquid source of organic carbon, essential for healthy plant growth in freshwater planted aquariums. Designed as an alternative or complement to CO₂ injection, it provides a bioavailable form of carbon that plants can readily use in photosynthesis. Ideal for low-tech setups or where CO₂ injection is limited, Flourish Excel™ also helps improve iron uptake by promoting the more accessible ferrous form of iron (Fe²⁺). * Provides an immediate source of carbon for aquatic plants* Enhances growth without the need for CO₂ injection* Can be used alongside CO₂ systems without interference* Promotes iron absorption for stronger plant health* Great for tanks where CO₂ injection may lower pH too much Why Use It?Flourish Excel™ delivers structurally similar compounds to photosynthetic intermediates, bypassing the need for traditional CO₂. This makes it easier for plants to build strong, healthy carbon chains critical for growth. Directions for Use:• On initial use or after large water changes (>40%): Add 5mL per 40L of water• Daily or every other day: Add 5mL per 200L of water• For small tanks: each cap thread ≈ 1mL• Dosing can be slowly increased in high-growth setups Suitable for: All freshwater planted aquariums A powerful carbon supplement that supports vigorous plant growth—without complicated equipment.
