When flushing to eliminate excess nutrient salt build up I use flash clean from GHE. My concern is that the ‘flushed water’ will be re-absorbed by the plant as the water stays in the tray of the autopot system. Should I be vacuuming the ‘flush water’ out of the trays?
AutoPot does not require you to flush through the top of the plant unless under extreme circumstances….. All you need to do is fill the reservoir with pH correct plain water 10-14 days prior to harvest and the plants will naturally absorb any nutrient in the substrate and then begin to lose their colour
I have used Flashclean as a normal watering. for me it worked the same as flushing the medium with plain water. except that the water usage is alot less, i used about 6lts of water mixed with flashclean, compared to 40ltrs of plain water flushing. i will be doing Flashclean at 25% dosage in the tank when I do eventual flush using the Autopot system.