The 5 to 10cm grade HUUM pair really well with the HIVE Mini and the rest of their range. On a HIVE Mini the stones are not hidden inside a casing, they are the product. The shape and sizing also navigate how the sauna itself behaves. The round shape of HUUM rocks were specifically designed so that the inner layers and every level of stone gets saturated with water, creating a subtle, consistent source of steam as it makes its way through every stone.
HUUM recommends getting a mix of both sizes, to ensure that the heater is filled evenly with no gaps. For the top of the basket: stack a dense layer, then add small stones to complete the fill.
A HIVE Mini needs ten boxes, 330 lbs in total.
HUUM sauna stones are required to run a HUUM sauna heater. Unauthorized brands will void warranty.