I am the aformentioned guy looking for ferts, I have tried hydroponics stores, but there are none around here anymore, all shut down. I tried finding stump remover which is supposedly KNO3, but it is not sold around here, or any other hardware/gardening store I have looked in.
Fluval PEEEEMP #9
2xAC30 + AC MINI (it's Hagen; close enough!)
CO2 stuff c/o REX