Jump to content

Recaulking a tank


johnoburns

Recommended Posts

Not really that hard, but it is a pain. I resealed an old 29 gallon and it holds water just fine,the new seams look pretty bad though ( not acceptable for a display). If you do decide to redo the seams make sure you get the right silicone, GE Silicone I (the one without bioguard) or something specific to aquariums. The smell of curing silicone is really bad.

Link to comment
Share on other sites

You have to remove the old silicone first. New silicone won't stick to old silicone. This is the most common mistake that people make. You have to use a razor and mineral spirits to clean off ALL of the old silicone. Once everything is clean it is no different from caulking anything else. More is not better, it just takes longer to cure and tends to look bad. Use just enough to create a nice smooth bead in the edges.

Link to comment
Share on other sites

On a side note, I think black looks better (at least on the vertical seams). I don't think it is that much more expensive to get black, but like mentioned above make sure it is 100% silicone with no additives.

Link to comment
Share on other sites

As already stated, it can be done but does take some patience and effort.

You must remove the old silicone completely and clean the surface thoroughly. I used rubbing alcohol. I also suggest using painters tape to lay out your seams, then apply silicone into the corner, and just after finishing the application, remove the tape to leave a perfect seam. It makes a big difference as it looks professionally done with no silicone smeared, etc.

Just don't let it setup too long before you remove the tape.

Link to comment
Share on other sites

I also suggest using painters tape to lay out your seams, then apply silicone into the corner, and just after finishing the application, remove the tape to leave a perfect seam. It makes a big difference as it looks professionally done with no silicone smeared, etc.

Just don't let it setup too long before you remove the tape.

That's what I did for my baffles on my sump. Most of my seams look great.

A few of them...not as good.

But for a first try I'm pleased.

Link to comment
Share on other sites

another tip, which may or may not help you, is using denatured alcohol before wiping your bead. i would use the aforementioned suggestion of using masking tape to lay out your seams. so once you have your tape in place, then go ahead and apply your silicone bead. at this point there is two ways of going about cleaning your bead, you can use a tool or just use your finger. i use my finger but i dont think that wil give you a wide enough bead... anyways, after applying your silicone bead, spray it down with a mist of denatured alcohol before you smooth out your bead. the alcohol will kepp the silicone from sticking to anything that its not already stuck to. not only that but it leaves the bead very smooth and clean looking.

thats my metohd for perfect $20,000.00 stone to stone silicone beads on granite counter tops ;)

good luck!

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...