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View Full Version : 135 Gallon Reseal


Instigate
07/07/2017, 05:52 PM
This tank doesn't leak but the silicone looks pretty rough imo. My question is, would you run this tank in your house as is? Or would you either re-silicone the inner seal or sell it?

https://www.*********.com/attachments/20170625_170448-jpg.540269/

https://www.*********.com/attachments/20170630_102411-jpg.540272/

https://www.*********.com/attachments/20170630_102450-jpg.540273/

https://www.*********.com/attachments/20170630_102522-jpg.540274/

https://preview.ibb.co/idr97v/20170706_165921.jpg

https://preview.ibb.co/nzRbnv/20170706_165954.jpg

https://preview.ibb.co/i2Yd0F/20170706_170011.jpg

https://preview.ibb.co/i3Kwnv/20170706_170105.jpg

Instigate
07/07/2017, 05:56 PM
I'm not seeing an edit feature. So here are the other photos:

https://preview.ibb.co/b88Sua/20170625_170448.jpg

https://preview.ibb.co/cJMQfF/20170630_102411.jpg

https://preview.ibb.co/jdzBLF/20170630_102450.jpg

https://preview.ibb.co/dsJSua/20170630_102522.jpg

Lsufan
07/07/2017, 08:06 PM
What is the purpose of resealing the tank? I assume it doesn't leak so are u just doing it for cosmetics?

Instigate
07/07/2017, 08:09 PM
What is the purpose of resealing the tank? I assume it doesn't leak so are u just doing it for cosmetics?

This tank doesn't leak but the silicone looks pretty rough imo. My question is, would you run this tank in your house as is? Or would you either re-silicone the inner seal or just sell it?

Lsufan
07/07/2017, 09:18 PM
If it doesn't leak & they still look good (hard to tell in the pic) then the seams are fine which is what holds the tank together. The seals that look rough in the tank are really there to protect the seams (silicone between the panes of glass)from water. Silicone degrades when in constant contact with water so the seals keep the seams from getting wet if that makes since.

So if u reseal the tank u would basically be doing it for cosmetic reasons because the tank is more then likely fine how it is. If the silicone between the panes of glass look good then the tank is fine. If u can live with the rough look of the silicone then I would just leave it as is. If u want it to look nicer then resealing is a option but u would need to be careful, take your time & use a good silicone like rtv 103 or 108. If u are comfortable doing the job then it will make it look better, but if u aren't confident then u can do more harm then good by actually damaging the seam.

If it was me I would probably reseal to make it look nicer but I have a good bit of experience with silicone & glass. For someone who doesn't have the experience then I would recommend leaving it how it is because structurally it is fine if the seams look good. So it really comes down to the individual

Instigate
07/07/2017, 10:42 PM
If it doesn't leak & they still look good (hard to tell in the pic) then the seams are fine which is what holds the tank together. The seals that look rough in the tank are really there to protect the seams (silicone between the panes of glass)from water. Silicone degrades when in constant contact with water so the seals keep the seams from getting wet if that makes since.

So if u reseal the tank u would basically be doing it for cosmetic reasons because the tank is more then likely fine how it is. If the silicone between the panes of glass look good then the tank is fine. If u can live with the rough look of the silicone then I would just leave it as is. If u want it to look nicer then resealing is a option but u would need to be careful, take your time & use a good silicone like rtv 103 or 108. If u are comfortable doing the job then it will make it look better, but if u aren't confident then u can do more harm then good by actually damaging the seam.

If it was me I would probably reseal to make it look nicer but I have a good bit of experience with silicone & glass. For someone who doesn't have the experience then I would recommend leaving it how it is because structurally it is fine if the seams look good. So it really comes down to the individual

Thanks for the well thought out response, I do feel confidant I could do it. But I really don't want to spend the time on it if it's purely cosmetic especially since you really can't see it from outside the tank. Plus I don't own my house so I will for sure have to move at some point and maybe I want to upgrade to a new tank then. But for now I have this and I just don't want to risk pouring 135 gallons of saltwater on the floor. If a seam fails will it generally be a slow leak? The catastrophic failures I hear about seem to always be stand related.

JTL
07/08/2017, 06:39 AM
I would reseal it and it would look like new. The most time consuming part is taping everything off, assuming that you want nice clean edges. I think you could do the whole job in a couple of hours. Once you have removed the old silicone (razor blade and then clean real good with acetone) I would tape the seams leaving about 1/16 to 1/8 space to add new silicon. As soon as you lay down the new stuff remove the tape, don't wait until the silicone drys. There may by other ways but this has always worked for me.

ca1ore
07/08/2017, 07:25 AM
It would be for purely cosmetic reasons. What holds the tank together are the structural joints between the glass. The internal bead really serves only to protect said structural joints. Resealing is a misnomer really. Does nothing to help structural integrity, and if the tank leaks then a complete disassembly is required.

Ron Reefman
07/09/2017, 06:03 AM
+1 for both JTL & ca1ore

I've built 5 tanks now and the last one I didn't even do the 'inside' bead. I wouldn't have done it that way, but I wanted it to match the 125g tank I bought. It used black silicone between the glass and no bead inside the tank. Both my tanks (cadlight and DIY) are doing fine after 9 months.

der_wille_zur_macht
07/09/2017, 08:08 AM
It seems to be gaining popularity for commercial tanks to not have the fillet, especially more appearance-focused tanks like fancy rimless. My rimless cube is built without the fillet. It does look good but it makes me a bit nervous that one day I'll nick it (I like to clean with razor blades) or something, but that's probably because I'm just used to the fillet - it's clearly strong enough without it.

That said, I have in the past cut the fillet out of a tank and replaced it purely for visual reasons. I had a 125g that had fillets that were really beat up, and it looked terrible.