Exo Terra Bio Drain 4.4lb

Establish a healthy and efficient drainage layer in your bioactive terrarium or paludarium with Exo Terra Bio Drain. This natural, non-decomposable substrate promotes optimal drainage, preventing oversaturation and the growth of harmful anaerobic bacteria. Ideal for tropical environments, Bio Drain creates a biological filtration system that helps maintain clean terrarium water, which can then be circulated in waterfalls or dripping plants. Use Bio Drain in conjunction with the Bio Drain Terrarium Draining Mesh to keep substrate layers separate and prevent contamination of the water system.