Safe way to dispense formaldehyde
We like to use formaldehyde in our footbath. We mounted the 275-gallon tank a few feet off the ground to give us enough head pressure to fill the 5-gallon container using gravity. We then drilled and tapped in 1/2-inch barbed fittings to attach 1/2-inch hose from the 275-gallon tank to the 5-gallon container, also adding in a valve. We did the same for the hose going from the container to the footbath. Lastly, we added a hose out the top of the container to help vent the gases away from the person filling the footbath.
Ben Chesser, Ohio