Who uses styrofoam under tank?

I have it inder our 180 gallon acrylic sump but not under our glass display tanks.

 

Styrofoam on acrylic tanks or a rimless tank. If you add it to a tank with frames you will have pressure on the bottom glass and could cause the glass to shatter.

If it's framed just level the stand.

 

I do on my rimless cubes

 

If you can find the manufacturer of the tank ask them. On second hand tanks you don't know brand sometimes, but I can't believe on some other forums how many people know the manufacturer and still ask! Tanks builders rules always are above forum advise!

That being said Buku is spot on.

 

oh I read this wrong I thought you were asking about it IN the tank on the bottom. Because I saw one guy do that and I was not sure why, I did not ask but I was guessing it was so the bottom did not scratch.

 

On glass tanks, no...if for any reason the wood you're placing isn't level & square all around, fix that, not the tank. Also, I've seen where people that have used the foam, it deteriorates because of water, air, time etc. then becomes a real problem. For wood protection I use a rubber based material, like sound matt for automotive uses.

 

This is why I always recommend calling the manufacturer if possible. The above is only true if talking about glass tanks with thick black trim (frame) on bottom. For my custom glass tanks built by miracles, one of North America's top builders, I personally had a conversation about what to put under the rimless tanks they built. "100% absolutely rimless tanks require some sort of foam under them or they will break." Straight from the manufacturer's mouth.

I just want to clear that up for any confusion! I am sure some people have rimless without foam, but I will follow the builders instructions. He specified what thickness and type (Lowe's blue foam).

 

Exactly why I said, "On glass tanks, no...".

 

Sorry I found that confusing as my rimless tanks are glass.