Help Me set up my 240gallon. Leveling problems

[xdragonxb0i]

I leveled my tank and stand today and fill it up with partial water.
but my water isn't completely leveled
i shimmy the stand to make the it all leveled

one side is 6.5'' and the right side is 6.75-7'' high.

what is the deal?
This the level from the length of the tank

Left side, of the tank

Right side front/ xmas tree side

the level going front to bank of the tank

Right side, back end/

After having two large tanks bust on me this year (220 and 300). Im setting up this tank slowly and cautiously.
Any help will be greatly appreciated

 

[xdragonxb0i]

Bump, it might be useless information
but I do hAve StYrocoAm under it

 

[kallmond]

Is it an acrylic tank? Has it been filled for a while? From what I understand, acrylic tanks can warp a little bit if they were filled and drained. Most people say it will even out over time.

If its a glass tank you don't need the styrofoam under it.

 

[Knowdafish]

1/4" over the length of the whole tank is really no big deal. I wouldn't worry about it!

 

[Pharaoh]

I agree... 1/4 is minimal.

Simple solution would be to shim the sand a bit more.

 

[TwistedPenguin]

Shim it some more, that's all.

 

[xdragonxb0i]

It's a glAss tNk
never been filled

one corner is close 7" and the oppiste corner left side is 6.5"
so the diffrence is more then 1/4"
would that still be safe to have a .5" diffrence

 

[NilePufferFanatic]

Is it possible that the top trim is not seated completely? I have bought used tanks where the glass is all square, but the molded plastic support was not parallel to the bottom pane of glass.

 

[kallmond]

If its glass I'd bet it crushed your styrofoam unevenly.

Try removing the foam and see if it levels it out

 

[xdragonxb0i]

Okay Everyone I talk to in person said I should Use styrofoam
but every one on mfk say it's not needed.

Anyone want to shed some light on this