Welcome to the last video in the Creating a Wooden Tank series.  No matter how well your epoxy coats were applied and no matter how perfect they looked, there are always going to be small flaws that form.  These are usually caused by the gaps between the grain of the wood.

Once you have applied as many coats as needed to essentially lock off the grain, inspect the coating and touch up any remaining flaws that you find.  Use 60-grit sandpaper to rough up the area that will be touch up and then wipe clean.

Little specs of wood showing through or gaps can be corrected at this time.  Any random fiberglass hairs that are sticking up can be sharp and should be sanded down and touch up too.  Use a small poster paint brush for this.

In the second video of the series we showed you how to fiberglass the seams of the wooden tank.  This is ultimately one of the strongest methods to use for the joints.

However, the may be a reason why fiberglass is not a viable solution.  The next best way then would be to use silicone in the seams.  While this is not the very best method for shoring up the movement in a joint, the silicone should remain flexible enough to absorb some of the movement if the seams move.

Finally be sure to coat the underside of the cap before attaching it to the top of the tank.  The will help ensure that moisture does not get into the top edge of the tank walls and cause them to swell.  The cap will also aid in keeping the walls firm and unable to bow from water weight.