long story... but i once had a person pour a bottle of concentrated lysol and draino into my tank.... i had a seaclone HOB, and right below it a powerstrip....
the skimmer was skimming so furiously that it had started dripping onto the powerstrip, and shorted it out.... when i flipped it back on the power strip burst into flames. lol
Haha.... I lived in a fraternity, and we had a drinking competition.... well i got back from the bars and hanging out with some friends, it was 5 am and as soon as I opened my door it smelled like a public swimming pool.
all my fish were dead as doornails.... everything was bright white. my skimmer was filled with chemicals... it was ridiculous.
a couple guys in the house wanted to mess with my fish tank... so they poured vodka in, but not much happened. so they went and got drano and lysol and poured it in. needless to say everything died nearly instantly. between them they bought me a new setup.
if you ever want white substrate and NO algae.... drano and lysol does the trick ;)