Well the 2 wet spots look to be completly gone with the fans blowing on them which seems to suggest to me that it was seepage, if I had a crack with a constant water leak, I dont think the fans would be able to completly dry it out. I could be wrong but it sorta makes sense, also, another guy at aquaria central had this to say which also makes sense:
uh, a crack in the BOTTOM of the tank is unlikely. that glass is tempered 99% of the time, and thus would shatter, not crack. and if the bottom of the tank was shattered, you would definitely know
uh, a crack in the BOTTOM of the tank is unlikely. that glass is tempered 99% of the time, and thus would shatter, not crack. and if the bottom of the tank was shattered, you would definitely know