Brightwell Aquatics Florin-Fe Ferrous & Ferric Iron for Planted Fresh Water Aquaria. * Provides both ferrous (Fe2+) and ferric (Fe3+) iron sources to maximize benefit to planted aquaria.
* Two-tiered approach to iron supplementation consists of one ingredient to deliver immediate iron and another ingredient that slowly releases iron during the light cycle, when the aquarium is illuminated.
* Over 50% stronger than most competing products.
* Formulated utilizing extensive research on aquatic plant nutrient requirements.