Abstract: A composition for conditioning water in an aquarium in order to both control water pH and reduce and/or eliminate chlorine, chloramine and ammonia build-up is provided. The composition includes monopotassium phosphate in an amount between about 10 and 50 weight percent and sodium hydrosulfite in an amount between 1 and 20 weight percent, with the balance being deionized water.

Abstract: A composition for conditioning water in an aquarium in order to both control water pH and reduce and/or eliminate chlorine, chloramine and ammonia build-up is provided. The composition includes monopotassium phosphate in an amount between about 10 and 50 weight percent and sodium hydrosulfite in an amount between 1 and 20 weight percent, with the balance being deionized water.

Abstract: A method for manufacturing hygristors includes preparing a hygroscopic gel containing a substantially greater proportion of carbon than the prior art, and milling the gel for a period of at least 24 hours to produce a smooth mixture. Substrates are dipped into the milled gel at controlled rates to coat the substrates. The coated substrates are cured under controlled temperature and humidity. Adhesion of the coating is improved by the smoother mixture resulting from the longer milling time, and by the differences in components of the mixture compared to the prior art. Long term stability and dynamic range are both increased.