I'm planning the plumbing for my tank and want to ensure that the drain lines and the return lines can easily be disconnected from the tank as the last two tanks I've dealt with they had to be cut off in order to move the tank. Is there any issue installing the bulkhead fitting with the nut on the inside of the tank and the gasket on the flange side on the outside of the tank. This way I can loosen the nut on the bulkhead fitting. I will be using the PVC slip fitting on the inside with a 90-degree elbow friction fit so that it can be removed. Any issues?