55 Rimless - The Planted Tank Forum
 
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post #1 of 10 (permalink) Old 10-22-2009, 09:03 PM Thread Starter
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55 Rimless

I am going to remove the top rim of a standard 48" 55. Anyone have any ideas or have already done this? I am going to have glass cut to silicone on the top for support. Was wondering how much I need? I was thinking a strip down the middle and both ends.

Last edited by Airphotog; 10-26-2009 at 01:43 AM.
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post #2 of 10 (permalink) Old 10-24-2009, 07:19 PM
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haha- i posted a thread about this not too long ago.. planning the same thing

https://www.plantedtank.net/forums/di...55-gallon.html

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post #3 of 10 (permalink) Old 10-24-2009, 07:46 PM
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google for a rimless tank calculator.

It's called AquaCalc and it's free to download it.

I ran the numbers on this and it ain't pretty:

recommended safety factor 3.8 or more

With your thickness (given standard 55's usually are .25"):

side safety is 1.71

This tank would be football shaped in short order and then fail.

You can get some 2" wide strips and some rtv silicone (much stronger than aquarium grade) and silicone them inside the top edge (no need to do the ends really as it would only leave 8" unbraced) and would probably have no deflection at all.

I have done this before to a 30XH and it was rock solid.

Hope this helps.

dantimdad
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post #4 of 10 (permalink) Old 10-25-2009, 07:11 PM
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Quote:
Originally Posted by Airphotog View Post
I am going to remove the top rim of a atandard 48" 55.
'glad I'm not your downstairs neighbor.

Edit: 'just noted you're putting in a new center brace; never mind.
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post #5 of 10 (permalink) Old 10-26-2009, 02:42 AM Thread Starter
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PDX-PLT, you had me worried for a minute. I thought you new something that you weren't telling me
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post #6 of 10 (permalink) Old 10-26-2009, 03:24 AM
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Quote:
Originally Posted by dantimdad View Post

This tank would be football shaped in short order and then fail.
dantimdad
OOH! I want a football-shaped tank! Superbowl.
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post #7 of 10 (permalink) Old 10-26-2009, 01:32 PM Thread Starter
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I plan on gluing a 3/8" x6 or 8" piece butted up to the inside walls and then for safety I thought I would put another piece over the top that I would glue to the outside. I could Eurobrace if I need to but that is a lot of work.






Quote:
Originally Posted by dantimdad View Post
google for a rimless tank calculator.

It's called AquaCalc and it's free to download it.

I ran the numbers on this and it ain't pretty:

recommended safety factor 3.8 or more

With your thickness (given standard 55's usually are .25"):

side safety is 1.71

This tank would be football shaped in short order and then fail.

You can get some 2" wide strips and some rtv silicone (much stronger than aquarium grade) and silicone them inside the top edge (no need to do the ends really as it would only leave 8" unbraced) and would probably have no deflection at all.

I have done this before to a 30XH and it was rock solid.

Hope this helps.

dantimdad
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post #8 of 10 (permalink) Old 10-27-2009, 07:17 PM
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found this link for someone who did a pretty simple- looking eurobrace on a 75 that originally had a black rim/brace
http://images.google.com/imgres?imgu...a%3DN%26um%3D1

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post #9 of 10 (permalink) Old 10-28-2009, 01:14 AM
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That's basically the idea, but, I don't think the ends being braced is really necessary on a narrow tank like a 55...but it couldn't hurt either and it's only a few bucks more to do it.

Steven
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post #10 of 10 (permalink) Old 10-28-2009, 04:07 AM Thread Starter
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Thanks Jenna that is a great idea. dantimdad I agree with you the on ends. I think I will keep them unbraced that will make it easier for the stands on the light.
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