JBL ProScape Plant Start Substrate Activator Kickstart root growth and jumpstart your substrate's biological cycle with JBL ProScape Plant Start. Designed for new aquarium setups, this specialized substrate additive contains live bacterial cultures that break down soil minerals, making essential nutrients instantly available for rapid plant uptake and vigorous root development. Beyond powering plant growth, these beneficial microbes settle deep within the substrate, converting the bottom layer into an active biological filter that breaks down organic waste. By out competing unwanted microorganisms, Plant Start helps prevent colonization by blue-green algae (cyanobacteria) and external pathogens, setting your aquascape up for long-term success. Key Features: Accelerates Root Development: Live bacteria break down minerals to optimize nutrient uptake for faster plant growth. Cyanobacteria Prevention: Inhibits blue-green algae growth and reduces harmful external pathogens. Substrate Bio-Filter: Transforms the substrate layer into an active biological filter to break down waste. Easy Initial Application: Sprinkle over the first substrate layer before adding the top cap. Package Contents: 2 individually sealed 8 g metallized bags (treats tanks from 20 L to 100 L).