75g without center brace? - The Planted Tank Forum
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post #1 of 19 (permalink) Old 04-16-2015, 06:45 AM Thread Starter
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75g without center brace?

So I was lucky enough to get a old 75g tank for free. I am in the middle of resealing it and want to know if it supposed to have a center brace. The PO said it never had one before. Its made with 3/8" thick glass and is your standard 4ft 75g.

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post #2 of 19 (permalink) Old 04-16-2015, 08:27 AM
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I have heard of people using tanks that large without them, some come with them and some don't, others break off and it is really hard to tell. If you feel a little uncertain you can make a really simple brace with scrap pieces of metal or wood. For one of my large bow fronts I screwed together three pieces of 2x4s, one long piece that sits on top, back to front and 2 shorter pieces that hang over the edge with the tank in between them nice and snug.
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post #3 of 19 (permalink) Old 04-16-2015, 09:45 AM Thread Starter
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I am debating on using a brace that I took off my 120g, it is 1/8" too long tho. Not that that would really throw anything off that much.

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post #4 of 19 (permalink) Old 04-16-2015, 12:29 PM
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Your 75 G

Hello Tank...

The tank is still useful, but without the center brace, I wouldn't fill it to the top, this would be risky at best. You can certainly fill it half full and emerse the roots of land plants and combine hardy floating plants. I have tanks like this and use florescent lighting from the local hardware store.

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post #5 of 19 (permalink) Old 04-16-2015, 12:48 PM
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Originally Posted by TankFreak420 View Post
So I was lucky enough to get a old 75g tank for free. I am in the middle of resealing it and want to know if it supposed to have a center brace. The PO said it never had one before. Its made with 3/8" thick glass and is your standard 4ft 75g.
I would silicone in a custom cut piece of glass.
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post #6 of 19 (permalink) Old 04-16-2015, 12:48 PM
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It's easy enough to figure out if it was made with a brace by just examining the middle of the front and back sections of the tank's trim. I owned a 125G that was made without a centerbrace, so if the tank is VERY old, some were made that way. But if this is one-piece trim, it was most likely removed.

In a nutshell, newer tanks over 36" long are made with one-piece top trim that also includes a center brace. They were made that way for a reason. Removing the brace makes anything that happens structurally, entirely of your making.

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post #7 of 19 (permalink) Old 04-16-2015, 03:50 PM
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I would silicone in a custom cut piece of glass.
That is also what I would recommend. And have in other posts.

Funny thing about the old tanks. I've got 3 55 Metaframes and as thick as the glass is and with the stainless for bracing they also have a center brace. It is a stainless channel about 2-3" wide center brace held in with stainless screws.

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post #8 of 19 (permalink) Old 04-16-2015, 04:06 PM Thread Starter
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Originally Posted by Bushkill View Post
It's easy enough to figure out if it was made with a brace by just examining the middle of the front and back sections of the tank's trim. I owned a 125G that was made without a centerbrace, so if the tank is VERY old, some were made that way. But if this is one-piece trim, it was most likely removed.
Both trims are 4 peace if that tells you anything, And I see no signs that there was a peace of glass in the center before. Trims where not cut, nor was there silicone residue.

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Funny thing about the old tanks. I've got 3 55 Metaframes and as thick as the glass is and with the stainless for bracing they also have a center brace. It is a stainless channel about 2-3" wide center brace held in with stainless screws.
I thought it was funny that this old 55g I picked up has a huge center brace but is also made with 1/2" glass. Then there is this 75g that apparently never had one lol.

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post #9 of 19 (permalink) Old 04-16-2015, 04:06 PM
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you can't tell whether there was a brace, or never was? Should be easy enough to figure out with close inspection.
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post #10 of 19 (permalink) Old 04-16-2015, 04:11 PM
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Both trims are 4 peace if that tells you anything, And I see no signs that there was a peace of glass in the center before. Trims where not cut, nor was there silicone residue.
That tells me a lot. I wish I knew who the manufacturer was, but that 125G I referred to above was made with 4 mitered sections of top trim. Made with 1/2" glass and was heavier than my 180G Oceanic.

I don't think you have anything to be concerned about.

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post #11 of 19 (permalink) Old 04-16-2015, 05:11 PM Thread Starter
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That tells me a lot. I wish I knew who the manufacturer was, but that 125G I referred to above was made with 4 mitered sections of top trim. Made with 1/2" glass and was heavier than my 180G Oceanic.

I don't think you have anything to be concerned about.
My 120g was the same way, I broke the trim on that and had to so rimless tho lol. This 55g also has the 4 peace mitered trims, I thought these where the Oceanics lol.

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post #12 of 19 (permalink) Old 04-16-2015, 08:28 PM
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If the glass is only 3/8" thick then it likely was intended to have a center brace. I believe for a tank that large to not have a center brace it should be at least 1/2" thick glass. Can you post any pictures of what you've got?

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post #13 of 19 (permalink) Old 04-16-2015, 09:15 PM
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So far what I have read tells me that you should put on a center brace just as a precaution, even if it wasn't designed with one. Better safe then sorry. The glass and silicon sounds like an easy route, or you could just cut your spare 120 brace to fit your 75.
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post #14 of 19 (permalink) Old 04-16-2015, 10:51 PM Thread Starter
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Originally Posted by namicat101 View Post
So far what I have read tells me that you should put on a center brace just as a precaution, even if it wasn't designed with one. Better safe then sorry. The glass and silicon sounds like an easy route, or you could just cut your spare 120 brace to fit your 75.
I have no way to cut a 8th on an inch off 1/2" glass... But I doubt it will hurt anything if I use it as is.

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post #15 of 19 (permalink) Old 04-16-2015, 11:33 PM
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I had a 55 gallon with 3/8" glass for years that somebody hat cut the center brace out of. It bowed a little over 1/16" at the middle which isn't great but didn't prove to be a problem. I definitely wouldn't risk it with a 75 gallon though and knowing what I know now I wouldn't use the same 55 gallon tank without a center brace. I've always liked this idea and I'd probably use one of these, courtesy of PlantedRich.

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