those1;4168486; said:
So you guys are just using the styro to help level the tank right
Actually, it depends on who you talk to...there are different schools of thought on the subject...
In MY opinion,
I use the foam insulation to buffer the slight irregularities in the FLAT surface of the stand...
Flat to me is of far greater importance than level.
Level is also important, but that is more of what's pleasing to the eye.
Flat is structurally important.
If the surface isn't flat, let's say one of the corners is a tad higher than the rest, then you place a torsional load on the seams, all of them.
The force of the water in weight is trying to equally settle it's self...water pressure exerts it's force in all directions equally, so when there is a bow or a tall corner or anything that is off from flat, by the water trying to exert it's force equally it creates spots of extra stress.
Think of it as stepping on a lego in your bare feet!...big time stress!!
Now if you were to put something like styrofoam insulation on the lego and step on it in your bare feet, the styrofoam will compress over lego and you won't have near the stress on the bottom of your feet...
I choose my foam insulation based on how far off from flat my stand is, and
how thick my Acrylic is...
After I am satisfied with the "FLAT", then I can worry about level... It is only a matter of shimming the end that has the "least" space from the waterline to the trim...
I prefer to shim a flat stand to get level
not
shim a level stand to get flat...


Hope that confused you less than it did me...


I do the front to back first then the end to end (left to right)]last