10-19-2012, 06:15 PM
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Resealing an aquarium primer
This has probably been done over and over, but I thought since I was doing it, I'd snap a couple of photos and write it up. I have a use for my old 29H aquarium that's been sitting in my basement for over 20 years. Rather than trust it, I thought I'd reseal it to better ensure against any problems.
Materials/tools: Single edge razor blade (holder optional), abrasive pad, rubbing alcohol, paper towels, Chalking gun, 100% CLEAR silicone I. You could use Silicone II (making sure it's CLEAR and 100% silicone) or other aquarium safe silicone.
Cost: $3.97 for Silicone.
1. Find a convenient workspace - workbench or table is best. I like to tip the aquarium on the front/rear when removing the old silicone.
2. Using the razor blade, carefully remove the silicone being careful not to pierce between the panes of glass. The objective here is just to remove the exposed silicone since the new silicone will not adhere to the old very well.
3. Use a fingernail and the abrasive pad to remove stubborn particles of silicone.
4. Once all of the silicone is removed, clean all of the corners really well with alcohol and paper towel.
5. In a WELL VENTILATED AREA (curing silicone is an irritant) put a bead of silicone around all sides, then the bottom. I like to do the sides first, then the bottom but it's not critical.
6. Use an index finger with light pressure to wipe the silicone in the side corners starting at the bottom and moving upward. Wipe your finger with the paper towel after each side. Use your thumb (again light pressure) all around the bottom, wiping with the paper towel as needed.
Note that you can be more liberal (and frankly more sloppy) around the bottom since this will typically be covered with substrate. Use the razor to clean up any spots or 'funny' edges (easier now than when dry).
7. Finished product - must cure for 24-48 hours at room temperature.
8. The last step is of course a leak test. If you were careful and took your time, this is really just a formality!
As shown, resealing an aquarium is really easy. The most difficult part is removing all of the old silicone. It takes awhile. Any older aquarium, especially one that has set empty for some time, deserves to be resealed to better ensure against leaks.
Last edited by AbbeysDad; 10-25-2012 at 08:34 AM..