Bio-Activ Sand – 20lb

World Wide Bio-Activ Sand is a natural aragonite substrate infused with beneficial bacteria to help jump-start biological filtration in marine aquariums. The fine, ocean-sourced grains create a natural look while supporting healthy pH and buffering capacity. Ideal for new reef tanks, upgrades, refugiums, and deep sand bed applications, this 20lb bag provides enough substrate for a wide range of aquarium layouts.

Why You’ll Love It:

• Pre-seeded with beneficial bacteria to help establish the nitrogen cycle
• Natural aragonite maintains pH stability and supports optimal water chemistry
• Fine grain size creates a natural reef aesthetic
• Ideal for new setups, upgrades, refugiums, or deep sand beds
• Helps reduce startup times and supports long-term biological health