Rallysman said:LOL!!!!! That made my day.....sorry, but that's not right. I want to see glass that will bow like that (not preformed).
Weight does NOT matter unless you're moving it. I cannot see how anyone can even consider the weight of any tank (tank only) to be a factor.
It makes no sense (unless you're moving it, of course)!
You are wrong, glass tanks do bow if it's not made with thick enough glass just like acrylic tanks, especially for taller tanks.
And weight is a significant factor to consider for larger tanks, to give you some idea a 300 gallon glass tank weighs 1000 lbs EMPTY due to the thick glass needed for support, while an empty 300 gallon acrylic weighs at 500 lbs max.
But even not considering those factors, the safety(almost unbreakable by normal usage) and clarity of acrylic tanks alone are worth it.
Only reason to get glass is because it's cheaper.