Fluval Stratum contains a powerful mix of nutrients, minerals and trace elements exclusively available to plants, promoting healthy development, vigorous growth and vibrant colours Non-compacting aquatic soil, lightweight 1-3mm powder format granules that allow the finest and most delicate roots to easily penetrate and spread throughout the porous substrate Supports a neutral to slightly acidic pH, ideal for live plants as well as tropical fish and shrimp, commonly kept in planted aquariums Infused with dormant bioactive beneficial bacteria that, once in contact with water, activates to break down waste and kickstart the nitrogen cycle, rapidly reduces ammonia levels to help stabilise water conditions Ideal for use as a main substrate in small aquariums, or used as a top layer in larger aquariums