Best Answer: 1) As the person above said: carbon, hydrogen, and oxygen. 2) No. This is unless we consider formic acid as a fatty acid (CH2O2), but the definition of a fatty acid is a carboxylic acid with a LONG unbranched aliphatic tail that is either saturated or unsaturated.
When the tubing is cool, the warm and moist air may condense in the tubing. Not only will you not get the benefit of the moisture, but it can collect and drip into your face or gurgle with the air flow. It is often worse when the bedroom environment is cool or cold compared to the temperature of the pressurized air.
Circulation pumps used in spas and hot tubs, also called Circ Pumps or Hush Pumps, are low-flow pumps that constantly circulate the water (24/7) very slowly, to continuously filter, heat and chemically treat the water. Common spa/hot tub circulation pumps are made by Aqua-Flo, Grundfos, Laing and Waterway.