Remove the plastic rim from tank? - The Planted Tank Forum
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post #1 of 12 (permalink) Old 10-04-2019, 12:42 AM Thread Starter
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Remove the plastic rim from tank?

I found a 55 gallon used Visio tank in my neighborhood. What a deal! (Unless it doesn't hold water). My question is this. Can I remove the cheap plastic rim around the top with out sacrificing strength or stability? The corners are mitered and don't seen to be joined in any way, so it doesn't look like the corners are helping to hold the glass together. Anybody have experience doing this?
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post #2 of 12 (permalink) Old 10-04-2019, 01:09 AM
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The corners are split at the top but are they split around the side? It would be a very odd 55 with a purely decorative rim. Assuming not decorative then it's not advisable to remove it. On something like a 20 gallon and smaller you can get away with it. On anything bigger you start to hear horror stories.
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post #3 of 12 (permalink) Old 10-04-2019, 01:57 AM
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Originally Posted by FlatfishTanker View Post
My question is this. Can I remove the cheap plastic rim around the top with out sacrificing strength or stability?

Unlikely if it has a center brace..
Corners really don't matter..
It's the bow in the middle that's the issue..

If the glass is thicker than 7mm (check on the side) maybe..
Would need to be around 12mm (1/2" thick)
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post #4 of 12 (permalink) Old 10-04-2019, 05:16 PM Thread Starter
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Plastic Rim

It is definitely NOT supporting the corners. But there IS a center brace. It is glass and glued to the inside. I believe that could be replaced with a couple metal bars (Stainless) that lap over the front and back of the tank. Should be even stronger and could look pretty cool if done right. But now I wonder what the glass edges are going to be like under the plastic rim. Are they going to be raw and jagged, or polished like the exposed sides? By the way, the glass is 3/8" thick.
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post #5 of 12 (permalink) Old 10-04-2019, 05:48 PM
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3/8 is sort of midway between free standing and braced..Thicker glass than my 55..



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post #6 of 12 (permalink) Old 10-04-2019, 11:28 PM Thread Starter
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Could aluminum corner molding be used to replace the plastic, or would the aluminum leach into the water?
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post #7 of 12 (permalink) Old 10-05-2019, 05:21 AM
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That looks like an Oceanic tank. My 75 has the glass brace. Trim, as far as I can tell, is decorative. If you want to remove trim from a standard tank you can use a glass center brace just like that tank.

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post #8 of 12 (permalink) Old 10-06-2019, 01:17 PM
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I've heard the edges under plastic rims are usually not very pretty, and not rounded off. But you could try removing it carefully to see what you get.
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post #9 of 12 (permalink) Old 10-14-2019, 06:03 PM
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Most people on the board say its fine to do a 5 or 10 gallon. A few of us have gone larger, like 20 longs or 29 gallon but I personally have not seen people go bigger with tanks that had a factory rim. Many feel that size is too big, and the center brace would be an issue. However, some think that the rims are more for production and also covering up the not so pretty silicone and have little structure. I really don't know but it seems like it can make sense.

What I will say is that taking the rim off is a total pain. Getting the rim off is easy, getting all the silicone off is where it gets really tedious. You will also want to go over the edges with very fine sandpaper, maybe start with 600 and move to 2000 to get a clean, not sharp, finished edge. Considering the tank size, especially length, and the age of the tank, I would be more inclined to buy a new rim. I forget who sells them but I know they are out there.

-Matt

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post #10 of 12 (permalink) Old 10-14-2019, 09:07 PM
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Originally Posted by talontsiawd View Post
Most people on the board say its fine to do a 5 or 10 gallon. A few of us have gone larger, like 20 longs or 29 gallon but I personally have not seen people go bigger with tanks that had a factory rim. Many feel that size is too big, and the center brace would be an issue. However, some think that the rims are more for production and also covering up the not so pretty silicone and have little structure. I really don't know but it seems like it can make sense.

What I will say is that taking the rim off is a total pain. Getting the rim off is easy, getting all the silicone off is where it gets really tedious. You will also want to go over the edges with very fine sandpaper, maybe start with 600 and move to 2000 to get a clean, not sharp, finished edge. Considering the tank size, especially length, and the age of the tank, I would be more inclined to buy a new rim. I forget who sells them but I know they are out there.

After re-reading the thread a bit, couple of things:
Tank has a glass center brace.. Plastic is mostly decorative.


Glass is thinner than some would consider acceptable for non-braced tank.. by about 1/8"..
Standard plastic braced 55's have thinner glass..

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post #11 of 12 (permalink) Old 10-14-2019, 09:31 PM
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I've removed the black rim on top of my old 20 gallon long. I kept the bottom. Anyway here's a link of how to do it.

Also a glass thickness calculator link. https://www.easycalculation.com/meas...calculator.php


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post #12 of 12 (permalink) Old 10-15-2019, 06:13 AM
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Quote:
Originally Posted by jeffkrol View Post
After re-reading the thread a bit, couple of things:
Tank has a glass center brace.. Plastic is mostly decorative.


Glass is thinner than some would consider acceptable for non-braced tank.. by about 1/8"..
Standard plastic braced 55's have thinner glass..
I missed the part with the center brace, that would be my main concern. I also just have never heard of that size tank with a decorative rim. The glass looks very thick.

I never want to say something is a good idea off of photos and descriptions but with a center brace, it sounds like it is truly a decorative trim, rather than any sort of structural brace. Thank you for the corrections.

-Matt

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