"Path or boundary","Shared-return option record","Separate-loop option record","Supplier drawing and evidence","Unresolved issue and owner"
"Option ID, supplier and drawing revision","","","",""
"Fish-to-crop flow and transfer conditions","","","",""
"Crop-to-fish return present or absent","","","",""
"Fish-side recirculation boundary","","","",""
"Crop-side recirculation boundary","","","",""
"Makeup water entries","","","",""
"Purge and residual destinations","","","",""
"Independent control volumes","","","",""
"Additional reservoirs and transfer controls","","","",""
"Optional mineralization or recovery loops, if offered","","","",""
"Shared air-climate dependencies","","","",""
"Shared power and other utilities","","","",""
"Operator work and responsibility boundary","","","",""
"Supported architecture or specific hold","","","",""
"Use","Manual paired flow record; no hydraulic or dosing calculations.","","Repeat IDs on the operating-dependency sheet.","Separate water loops do not prove independence of all services."
"Source context","","","https://pmc.ncbi.nlm.nih.gov/articles/PMC5619720/ ; https://link.springer.com/chapter/10.1007/978-3-030-15943-6_8","Original architecture comparison; no copied research figure."