Rimless rule of thumb?

[YHSublime]

FYI yoga mats do come in two thicknesses. I choose the thinner of the two under my nano.

 

Sent from my SAMSUNG-SGH-I337 using Tapatalk

Thanks! Would you go bigger with a 100 gallon you think?

 

 

Sent from my iPad using Tapatalk

[20LogR]

Thanks! Would you go bigger with a 100 gallon you think?

 

 

Sent from my iPad using Tapatalk

 

for sure, looking at amazon they also have some 1/2" and 5/8" "extra thick" yoga mats. depending on your dimensions that may be a better option.  You’re just trying to reduce pressure points under the glass so I would think that any of them would probably work. 

[zygote2k]

FWIW, I have a 36" rimless/frameless cube sitting directly on a stand that is more or less smooth and flat. It's been sitting like that for a year with zero issues. I never even thought about foam underneath it because it's simply not needed.

On very large frameless glass tanks, we use sound board as the top layer above a 3/4" sheet of plywood on top of the steel frame.

No foam.