Reservoir volume, mixing, sequential immersion, oxygenation, sanitation and the variables required for repeatable root-zone exposure.
Function
The reservoir is both the nutrient-solution storage volume and the sequential root-contact zone. This reduces the need for a separate recirculation circuit, but it makes liquid level, mixing, temperature, oxygen and carry-over central experimental variables.
Required reservoir state
| Variable | Why it matters | Minimum record |
|---|---|---|
| Working volume | converts dose volume into concentration change | pre- and post-dose volume or level |
| Liquid level | sets immersion depth and time | continuous or per-cycle level |
| Temperature | affects roots, electrode response and oxygen solubility | logged °C |
| pH | affects nutrient speciation and uptake | calibrated pH trace |
| EC | bulk ionic-strength proxy | temperature-corrected EC trace |
| Dissolved oxygen | root-zone aeration indicator | DO where instrumentation is available |
| Mixing time | determines when feedback is valid | step-response test |
| Sanitation state | controls biological carry-over | cleaning batch and verification |
Mixing validation
Inject a harmless conductivity tracer or a small controlled nutrient-stock dose at the normal dosing point. Measure EC at the control sensor and at representative reservoir positions until all readings remain within the predefined mixing tolerance. The maximum observed stabilisation time becomes the minimum feedback delay.
Volume balance
ExplanationThe next reservoir volume equals the current volume plus additions, minus sampling and other losses.
FlavoRotor design provenance
The system-specific configuration on this page is traced to the supplied FlavoRotor engineering records.