the size pots are 25 litre.
the soil is cheap soil from the local garden centre @ £3 for 75 litre.but i have changed to canna pro( canna makes nutes soil etc, maybe diff in states but im in the uk)
ya thinking MG overdose , ?

DEFFO NOT MITES i lived with mites for a couple years , i really do no what mite damage looks like ,really