Just thought I'd give my two cents for the diyers..
I use regular polyester resin, you can get it anywhere, and pour it into the corners of the tank. Its real easy to mix the hardner. I only make 1-2 ounces at a time and create virtually no waste. I lean the tank in a 45 degree angle for whatever corner I'm doing and pour the resin along the corner. It creates a stronger bond and seals all in one. Plus you can give it a quick sanding and paint epoxy directly over it. Works everytime. Heres a couple of pics..



I use regular polyester resin, you can get it anywhere, and pour it into the corners of the tank. Its real easy to mix the hardner. I only make 1-2 ounces at a time and create virtually no waste. I lean the tank in a 45 degree angle for whatever corner I'm doing and pour the resin along the corner. It creates a stronger bond and seals all in one. Plus you can give it a quick sanding and paint epoxy directly over it. Works everytime. Heres a couple of pics..






