Metal Stock Tanks

Metal stock tanks tend to vary more in their manufacturing quality than plastic stock tanks. Look at the size of the lateral corrugations used for stiffening when making your purchase. If they are big you can expect to be jabbed in the back when leaning against the side as explained in the plastic tank section. Large corrugations will also make it difficult to when installing the circulation ports.

A benefit of having a metal tank is they are easier to insulate because of the vertical sides which allow you to easily wrap insulation around and put on an outer covering of wood. You can also easily make a depression in the metal for recessing the bottom drain plug.

Metal tanks tend to be less expensive than plastic tanks. Most people are surprised at how nice the feel of the metal plated inner surface is. It is not rough like most metal surfaces.

The biggest downside to a metal stock tank is its durability. This is mainly because of rust. The hardness of the water used in the tank will determine how long it lasts. The minerals and chlorine in the water will eventually corrode the sides of the tank.  You can generally expect it to last 5-10 years and can extend its life but upgrading to zinc plating rather than steel.