World Wide Activ-Flora Planted Aquarium Substrate Black

ActivFlora Planted Aquarium Substrate is a Bio-Activ NUTRIENT-ENRICHED gravel specially developed and suited for planted aquaria. ActivFlora gravels are naturally abundant in trace elements that instantly provide a nutrient-rich environment in which your aquatic plants will thrive and achieve optimum health and growth. Grain size: 1.2 - 1.7mm.