Why is relying only on fine play sand discouraged for BDFB substrate?
Answer
It is physically difficult for the beetles to walk on, causing excessive energy expenditure
Using only fine sand is discouraged because it makes locomotion physically challenging for the beetles, forcing them to use excessive energy navigating the surface.

#Videos
Blue Death Feigning Beetles Care Guide - Asbolus verrucosus
Related Questions
Does the ability of BDFBs to survive in suboptimal care imply that optimal care is simple?What lid choice is often cited as ideal for BDFB enclosures due to ventilation needs?If Blue Death Feigning Beetles appear dark or black instead of vibrant blue, what does this indicate?What is the primary purpose of the deep base substrate layer in a thriving habitat?Why is relying only on fine play sand discouraged for BDFB substrate?What temperature range characterizes the ideal hot spot for BDFBs aiming for high activity?Regarding lighting, what specific requirement do BDFBs lack, unlike many reptiles?Why is overhead heating considered superior to under-tank heating mats for BDFBs?For optimal health and lifespan, what should the BDFB diet be characterized as?What is the recommended method for providing moisture/hydration to BDFBs while minimizing risk?