Another Metaframe restoration - The Planted Tank Forum
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post #1 of 25 (permalink) Old 03-28-2014, 01:24 PM Thread Starter
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Another Metaframe restoration

Well, I picked up a 10 gallon Metaframe tank the other day and it looks to be in need of a re-seal.

I was reading the forums and it seems that a piece of glass cut to the inside dimension of the tank is the safest method to replace the slate bottom but my question is this:

Does the tank have to come apart to silicone the side panels to the bottom, or can you just lay the bottom panel in and seal it that way from the inside?

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post #2 of 25 (permalink) Old 03-28-2014, 01:34 PM
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Quote:
Originally Posted by jstehman View Post
Well, I picked up a 10 gallon Metaframe tank the other day and it looks to be in need of a re-seal.

I was reading the forums and it seems that a piece of glass cut to the inside dimension of the tank is the safest method to replace the slate bottom but my question is this:

Does the tank have to come apart to silicone the side panels to the bottom, or can you just lay the bottom panel in and seal it that way from the inside?
you missed this part:

Quote:
The enemy of these tanks is lack of water. Once they are filled they could hold water for years, but when they sit empty for many years the asphaltum dries out. Years ago you could have saved many of these tanks by filling them with hot water so the asphaltum would soften and it would reseal itself but most is not all of these taks found today have been sitting for so long that there are no solvents left in the original sealant so it cannot be softened.
I would think an entire reseal......

interesting comment
Quote:
Silicone will NOT adhere to slate.
That is the reason some folks add a glass plate over it when they silicone the entire tank.
http://www.aquaticcommunity.com/aqua...=80013&page=2&
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post #3 of 25 (permalink) Old 03-28-2014, 01:38 PM Thread Starter
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Yes. The plan is an entire re-seal. But as far as the details for the bottom panel replacement..I cannot find where the actual siliconing is placed. It seems to me that the silicone at the 90's where the panels meet is not structural. The bead inbetween the panes is what keep it together

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post #4 of 25 (permalink) Old 03-28-2014, 01:45 PM
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I have a few of these tanks though they are not slate bottomed. Mine are newer old tanks. Anyway I have always assumed the metal frame itself does most of the work at retaining the weight of the water. So I have simply siliconed the seams on them and filled them with water.
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post #5 of 25 (permalink) Old 03-28-2014, 02:03 PM Thread Starter
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What glass thickness should I be using? 3/16"? Tempered?

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post #6 of 25 (permalink) Old 03-28-2014, 02:15 PM
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Are you replacing the slate or covering it? Is it broken or what?
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post #7 of 25 (permalink) Old 03-28-2014, 02:41 PM Thread Starter
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Replacing the slate.

I can't cover it because there is a slight "ridge" down the middle of the slate so it's not perfectly flat.

It's not broken. I actually like it in the tank but the original sealant is dried out. i was thinking of placing it back on top of the replacement bottom panel.

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post #8 of 25 (permalink) Old 03-28-2014, 02:52 PM
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I can't remember the bottom of the tanks well and they are filled with water at the moment! I guess it all depends on how you want to restore this thing. Couldn't you simply silicone it into place?
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post #9 of 25 (permalink) Old 03-28-2014, 02:56 PM Thread Starter
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I suppose I could. But the ridge in the slate is making me nervous. Like it could cause a pressure point when the tank is filled.

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post #10 of 25 (permalink) Old 03-28-2014, 02:58 PM
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I think I meant just silicone the slate itself in place. I guess I haven't understood what is wrong with it.
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post #11 of 25 (permalink) Old 03-28-2014, 02:59 PM Thread Starter
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From what I have researched, silicone will not adhere to slate

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post #12 of 25 (permalink) Old 03-28-2014, 03:09 PM
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Oh, shows what I know! I suppose you could use a urethane caulk.
So is the slate inside the side panels or under them?
I would use the thicker glass I guess if you just want to replace the bottom.
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post #13 of 25 (permalink) Old 03-28-2014, 03:18 PM Thread Starter
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Yes. The slate is inside the panels.

I wanted to make the tank actually usable with the lowest probability of leaks.

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post #14 of 25 (permalink) Old 03-28-2014, 03:28 PM Thread Starter
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And if I were to keep the slate in the bottom and put the glass on top, I think the silicone and glass would show above the bottom trim. Yes, it's purely an aesthetic thing, but I want it to look good!

The ridge in the slate is right there in the middle
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post #15 of 25 (permalink) Old 03-28-2014, 03:40 PM
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That is in good condition.
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