Hello it's me frank here :) just making this video to help you decide on what type of substrate is best for your tortoise...I recommend Eco earth coco fiber and Timothy hay and maybe if you must then do 50% coco fiber & 50% play sand.Hope my advice helps.ello it's me frank here :) just making this video to help you decide on what type of substrate is best for your tortoise...I recommend Eco earth coco fiber and Timothy hay and maybe if you must then do 50% coco fiber & 50% play sand. Hope my advice helps.