Casing is a distinct surface layer, with its own preparation, physical structure and hygiene requirements. Keep its source, treatment and application records. Apply using the crop-specific method taught for that material. Uneven depth or unintended compaction changes the surface environment and makes later comparisons difficult.
Room relative humidity and casing water content are not interchangeable. Examine the layer and the developing crop, not only the controller. Record watering timing, method and affected areas. If only part of a bed dries, compare distribution, air exposure and layer uniformity before adding more water everywhere. Avoid treating standing water as evidence of good moisture management.