Installed footprint
Measure buckets, modules, reservoir, controller and the hose path rather than the plant sites alone.
What to compare
Service access
Leave room to inspect roots, clean lines, change solution and reach pumps without moving the entire system.
Water management
Plan leak containment, shutoff access and safe separation between water and electrical connections.
Monitoring
List the measurements and adjustments the system requires instead of assuming every controller is included.
Package contents
Confirm the exact pump, tubing, fittings, air equipment and controller included with the selected variant.
Before buying: confirm the exact model, package contents, current price, availability and compatibility at the manufacturer or retailer.