Instructables

Step 13: Install in the tank

Picture of Install in the tank
drying 5.jpg

Now remember practicing in step 10 ?  Here is where it will pay off.  Install the pieces in the tank and brace/block/tape or hold in place till it sticks.  be sure to press on it slightly to help spread the silicone against the glass.  Allow to dry for at least 48 hours before adding water.
Looks top notch. Love to see a picture of it with fish and plants added.
makaay4 years ago
why give support ?
The wet silicone wouldn't be able to hold a somewhat heavy object like this until it's dry. It would tip forward. Of course, after it's dry, it'll never come off. They use that stuff to hold skyscrapers together.