If you suffer from backaches, joint, bone or muscle pain, you might be considering a waterbed. Therapeutic benefits aside, many former insomniacs say that waterbeds simply provide a better sleep experience -- and there are definite health benefits to be gained from a good night's sleep. As you assess the pros and cons of a waterbed, don't let the cost of the conditioner be a factor. You can make your own water conditioner and derive the benefit of store-bought conditioner that stems the growth of algae and bacteria.
Verify how much water your waterbed holds. You will need about a quarter-cup of conditioner for every 100 gallons of water the waterbed holds.
Pour 8 cups of distilled water into a large container. Add two-thirds of a cup of sodium thiosulfate, which conditions water by removing chemicals from it. Alternatively, you could use sodium hydroxymethanesulfinate. Put the lid on the container and shake it well.
Pour fresh conditioner directly into the filled waterbed mattress every six months to keep the water conditioned. Make a new batch of homemade waterbed conditioner with each application.