Physics of an unlevel tank

[Jeremy1988]

Yeah I found some awesome shims, called Ez-Shims...there load bearing composite. They can hold up to 8,000lb. They start at 2cm and work up to 6 I believe, and the great thing is they break off every couple of millimeters. They look great and are only 8 bucks for a pack of 20. There 1.19 wide.

 

[TONY_C]

Well...I never thought of rusting as a problem...I was thinking that the shims would go under the stand...away from water...I guess if water runs down the stand it could effect it. Maybe I can find away to protect the steel by coating it with something...then again the CPC may wear off over time. Maybe I will get some EZshims...seen them online, look like a composite material.

Lowes or HD sell strips of aluminum too. Aluminum will oxidize a bit but it won't rust. Or use stainless steel or paint the steel

 

[Jeremy1988]

Yeah I'm keeping the steel strips...I went to Lowes and a guy at the paint department sold me some stuff I can use to coat them with. I'm basically going to bring the front of the tank up with those strips then use EZ shims along the sides for extra support. There load bearing composite shims you can buy at ACE hardware. They start at 2mm and work up to 6 or 8, and they snap off at each centimeter I believe. Can hold up to 8,000 lbs. I seen the aluminum stips...they were real expensive though and I would have had to cut them with a hacksaw. I figured steel is stronger and its the exact size...so what the heck lets try this route.

 

[RobbyG]

The problem isn't with it being out of level in one direction, its more that its out of level in 2 direction, causing a torque on the bottom plane. If there is rotational torque that's when in the X-Y or Y-X plane you can have stresses build abnormally along one of the seams, actually along two of the seams that are directly opposite of each other. When this happens you can get premature failure if the stresses are abnormally high.

100% agree with this assessment. If the tank is glass then the silicone seams on the opposing sides will be under extra stress and the worst part is that the stress is not linear across the line. That sets up an effect like trying to peel off a strip of ductape. It takes a tremendous force to lift off the whole strip at once but if you lift from one end you can peal it off with much less force.

If it was my tank I would endure the pain and empty it and fix the problem rather than have a possible seam rip later on.

 

[Ccoffel81]

Old thread new question

Old thread new question

I have a 6'l x 30"w x24" h aquarium and it is within a 1/8th" on the length do you think I should have any issues. It's also all plate glass double glass braced.

 

[Ccoffel81]

I have a 6'l x 30"w x24" h aquarium and it is within a 1/8th" on the length do you think I should have any issues. It's also all plate glass double glass braced.

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[hkgar]

I knew I shouldn't have stopped by the Advanced Topics. Only read the 1st 3 post and said Waaaay over my head

 

[Rover88]

Kind of necro'd the post, but..

Ccoffel81,

You are talking about less then half a % difference in height on the tank. You are fine.

What you need to make sure is that its equally unlevel. Meaning that the front pane and back pane are both 1/8" lower on one side then the other. Even if they aren't its such a tiny amount. But the issue would be rotational tourque... If one corner was lower then all the others, it puts a 'twist' on the tank. Thats where the danger comes in.

 

[saveafish]

I'll put it super simple. If the stand is 100% level. And the surface it's sitting on isn't your ok. If the stand has a level top but off on yawn, it's ok. If it's off on pitch it's ok. If yawn and pitch is off this equals TORK. TORK is uber bad. This means the stand is twisted.

 

[Ccoffel81]

Kind of necro'd the post, but..


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Lol seen was old thread


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