Fluval Stratum 4kg Aquarium Plant & Shrimp Volcanic Soil Fish Tank Substrate

Encourages strong plant growth - roots easily penetrate and spread throughout substrate to obtain key nutrients Porous structure allows for rapid colonization of beneficial nitrifying bacteria Helps support neutral to slightly acidic pH - ideal for most plants, tropical fish and shrimp normally kept in planted aquariums Provides newborn shrimp with a refuge from predators until they are large enough to emerge Will not discolor water and helps control organic discoloration when natural driftwood is present Note Please be aware that air bubbles being released when first submerged is perfectly normal and nothing to worry about. The bubbles is just normal air being released from the porous surface of the product. Only pockets of gas that have built up over time, due to decomposition are of concern, due to the type of gas.