If using 10 ltr pots, i would flush minimum 3-4 times the volume of the pots. 30-40 liters per pot.I have flushed about 4 hours ago, with just ph'd water and the new growth seems to be perking up a little, early days yet though, all the other older leaves are still going south.
im using 10 ltr pots and i flushed 5 ltrs of water through and let it drain till it stopped dripping out the bottom. Should i flush through more ?