I apologize if this has been asked previously, I did search the forums first before posting, but did not find answers.
I answered an ad in craigslist for a 60g acrylic seaclear tank. When I looked the tank over, I noticed lots of tiny cracks along the edges of the tank, and a two inch patch near the top. I asked at the local LFS
where the guy purchased the tank, and the LFS
guy said that wide changes in temperature can cause this. He also added that if the cracks didn't go all the way through the acrylic, it was ok. And if it did leak it would be a slow process rather than the whole thing exploding. (I was worried that I'd have 60 gallons of water on my floor).
I didn't buy the tank, but I was wondering about the integrity of acrylic tanks in general. Is this a common occurance?