OCTOPOT Hybrid Grow System Manual page 17

Flushing
Individual Octopot Hybrid Grow Systems
To flush a plant at the end of the growing season, simply stop adding
fertilizer/nutrients to the Hydro Reservoir for the last 7-10 days and add fresh water
instead
Auto-Fill Hybrid Grow Systems
When using the Auto-Fill system, simply shut off the water source and open the line
to drain the system to empty. Refill with fresh water!
There is NO reason to drain Octopot Hybrid Grow Systems DURING the grow cycle,
Follow these steps to Recover from Over-Fertilization:
Empty the reservoir with a small pump, siphon, or shop vac
Remove any dead roots inside the water/reservoir
Refill the Hydro Reservoir with fresh water, and continue growing!
In drastic cases, you may need to flush the soil and remove the leachate.
unless you have over-fertilized your plant