Fluval Bio-Stratum Size:17.6 lb it provides effective and thorough

it provides effective and thorough mechanical and biological filtration

durable and rust- and scratch-resistant

Premium natural gravel for the planted aquarium

programmable collar keys are sold separately for cats without microchips

use Zoo Med’s Hatchling Formula

Fluval Bio-Stratum Size:17.6 lb it provides effective and thoroughMade from 100% natural, mineral rich volcanic soil from Mount Aso in Japan and infused with beneficial nitrifying bacteria, Bio Stratum is specifically formulated to provide immediate biological activity and maintain ideal conditions for a thriving planted aquarium. Characterized by its non compacting 1 mm powder granules, Bio Stratum allows plants with even the finest and most delicate roots to easily spread throughout the porous substrate while