My constraint is room, its between a door frame and a concrete wall. I want it to fill that out and it will... one day when I build a 480 gallon plywood tank. Until then I'm going to drop a 210 in there for 800 or 900 dollars and be done with it.
I don't believe the weight per cubic inch is actually dramitcally different between plexi and glass or am I wrong? I thought it was like .1lb per square inch diff at most.
How thick is your Acrylic?
RE: acrylic tanks, I'm in the same boat as you guys, I want the largest tank as cheap as possible. I had a few conversations with some builders and asked what's the best bang for the buck, if I don't care on size, shape, just a big box to put fish in. They told me sheets of acrylic come in certain sizes and if you can make as few cuts as possible and use up full sheets of acrylic with no waste then you can get the biggest tank possible with out getting into the "custom" price range.
10X6' foot sheets is the best bang for the buck. This sheet cut length wise gets you 10X3 sections and you get a 10X3X3' tank for the absolute cheapest "per gallon" tank.
Another common sheet size is 8X6 so you can get 8X3X3 tanks built economically. If you wanted a 7X3X3 it may cost more than the 8 footer just because of the extra cuts. The same amount of acrylic is used.
If your flexible on size you can take advantage of this.
Interesting. Another point for me was, when I was younger I had more stupid friends than money, so buying a 8000 pound tank and carrying it up 7 flights of stairs was cool and no big deal for all of us. At 45 though, I definitely have more money versus friends that are looking to help me carry a crazy heavy tank down into my basement and through a window. My 400 gallon in acrylic was silly heavy, I couldn't even imagine what a glass tank that size would weigh.