styrofoam under tanks

[kole]

My new 180 has arrived! I built my stand and have checked it for level and square. The tank I have has a flat trim on the bottom not the trim that raises the bottom pane of glass 1/2 inch. The bottom pane is only raised the height equal to the width of this flat trim probably 1/8 of an inch. So I want to know what I should place on top of the stand between the stand and tank.
Couple of ways I have considered and have been searching online about.

1) I could place the tank directly on the 2 X 6 rails nothing between tank and stand with open top tank.
2) place plywood on rails and tank on plywood
3) place 3/4 styrofoam on rails then tank on styrofoam
4) place plywood on rails then styrofoam then tank

Any suggestions which way would work best or what way do you have your large tank placed. Take in consideration the type of trim on the tank. Thanks
Please post with anything you have experienced. I know it has been debated a lot but I want to do it right.

[Mrfish55]

Option 4, plywood, foam, tank. Double check plywood for level prior to adding the foam.

[kole]

Originally Posted by Mrfish55

Option 4, plywood, foam, tank. Double check plywood for level prior to adding the foam.

Is this what you have for your tank?

[kole]

Thanks Myka. From what I have been reading the opinions are foam under tanks without a trim and no foam under tanks with a trim. The trim I described in my first post is not the "normal" trim that I have seen on other tanks. The bottom pane of glass would almost be resting on plywood if I used it. So would this be considered trimless? Tanks only need to be supported on the outer edge correct? I'm thinking if I use the styrofoam without the plywood it would even out any imperfections in the 2 X 6 while not putting upward pressure on the other sections of the bottom glass. Anyone see anything wrong with this? From what I can tell the sides of the tank are sitting on the bottom glass. Thoughts?

[The Grizz]

Option 4, flush with tank edges, 1/2" pink.

[kole]

Originally Posted by The Grizz

Option 4, flush with tank edges, 1/2" pink.

I was hoping you would reply. This is what you recommend on your stands? I realize yours are metal.

[StirCrazy]

Originally Posted by The Grizz

Option 4, flush with tank edges, 1/2" pink.

+1, I would even go as far as to a double layer of 3/4" plywood to make sure its nice and stiff

Steve

[Myka]

Originally Posted by kole

Thanks Myka. From what I have been reading the opinions are foam under tanks without a trim and no foam under tanks with a trim.

I use foam under both types.

So would this be considered trimless? No Tanks only need to be supported on the outer edge correct? Yes I'm thinking if I use the styrofoam without the plywood it would even out any imperfections in the 2 X 6 while not putting upward pressure on the other sections of the bottom glass. Anyone see anything wrong with this? No, that's what I do, there's more than one way to skin a cat.

[StirCrazy]

Originally Posted by Myka

I use foam under both types.

Me three....

Steve

[The Grizz]

Originally Posted by kole

From what I can tell the sides of the tank are sitting on the bottom glass. Thoughts?

This is not good, you deffinately want to have plywood then foam to support the WHOLE bottom pane so it doesn't crack.