Need advice on scraping and resiliconing my tank... - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 01-25-2013, 12:22 PM Thread Starter
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Need advice on scraping and resiliconing my tank...

Just got a second hand 125g tank of questionable integrity so I'm going to go ahead and reseal it all before setting it up. Can anyone point me to a general DIY/FAQ kind of thread on resiliconing your tank?
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post #2 of 8 (permalink) Old 01-25-2013, 12:52 PM
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You need tank sealant without any mildew inhibitors added.
Safety razor the old sealant off the inside of the tank seam using care not to push the blade between the glass panels were the actual seal exists.
Clean the surface of the glass with a scotch brite pad or similar soaked in Acetone or 70% or above Alcohol. Allow the glass to dry and apply the new silicone.

Google or Yahoo searching will load you up with advice.


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Last edited by wkndracer; 01-25-2013 at 02:31 PM. Reason: removing my opinion
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post #3 of 8 (permalink) Old 01-25-2013, 12:59 PM
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Re: Need advice on scraping and resiliconing my tank...

Quote:
Originally Posted by bradleyheathhays View Post
Just got a second hand 125g tank of questionable integrity so I'm going to go ahead and reseal it all before setting it up. Can anyone point me to a general DIY/FAQ kind of thread on resiliconing your tank?
There are several no links on hand, in the meantime start taking it apart. Using razor or fishing line etc to separate the silicone and get all the glass cleaned up.

Putting new silicone down on a framed tank is a breeze since the silicone is there to seal the panes vs a all glass tank where its sealing and holding.

Do some google searches as well, don't worry it's not as daunting as it looks

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post #4 of 8 (permalink) Old 01-25-2013, 02:09 PM
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Quote:
Originally Posted by wkndracer View Post
You need tank sealant without any mildew inhibitors added.(imo)
i don't think this is an opinion, but a requirement as the mildew inhibitors will leach into the water.

OP, do an advanced search focusing on the DIY forum, there are a handful of really good posts regarding building one's own tank


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post #5 of 8 (permalink) Old 01-28-2013, 01:07 AM Thread Starter
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Well, I've gotten a lot of help so far and all of the various information sources tend to agree with each other except on this one point. Some give advice that, considering I'm doing a 125g tank I should take the tank completely apart separating the glass panels and top and bottom plastic frame pieces, remove all the silicone, and then rebuild it from scratch. While other advice is to scrape all silicone from the inside of the tank that I can get to making sure not to let the razor slip between the glass panels to compromise that silicone, and then clean and re silicone the inside.

So which advice should I take? Would it be ok to just do it the simpler way, or is breaking the tank all the way down entirely necessary?
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post #6 of 8 (permalink) Old 01-28-2013, 03:54 AM
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It should not be necessary to separate the glass panels unless you notice that the original silicone is missing from between the panes.

I resealed a 125g tank by removing the inner fillet beads in the corners of the tank only. It's important to remove all traces of these beads and clean the glass surface well before replacing with new silicone.

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post #7 of 8 (permalink) Old 01-28-2013, 06:12 AM
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Check the braces to make sure they're not cracked or damaged. The integrity of the tank may depend on the braces and if they're broken, the tank can bow and eventually leak. Was it filled with water when you got it? Or was it in storage? Do a water test to see if it leaks or bows. This may save you the trouble of re-siliconing.
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post #8 of 8 (permalink) Old 01-28-2013, 01:04 PM
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if there is a gap in the silicone seal that actually helps support the tank, when u silicone it will fill in those gaps..

just scrape the inside portion off and re silcone
this is how i redid my daughters OOOOLLLLLDDD 20 gallon,, tank was 43 years old to give u an idea

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