Ive been doing this right at 9 years and still made a stupid mistake last night.This weekend Im going to tie the 120g to the sump room down stairs . Im just waiting on the barracuda pump on Friday.So i figure Id do one last water change with buckets to get it out of my system. I mixed up 30 gallons of water .Had a mag 12 with a short hose to fill up my water containers with old water from my sump.So I unplug one of my koralia1400s from my dj switch and forgot to flip the switch off. The hose was pointing right at me as plug in the mag 12 to fill up 6 five gallon containers I got soaked. :doh: