I know it effects density.

As temperature increases, the space between water molecules increases—also known as density, which therefore decreases. If the temperature of water decreases its density increases, but only to a point. ... Evaporation increases salinity and density while the addition of freshwater decreases salinity and density.

Quote Originally Posted by joseserrano View Post
It does not. It will effect ph. More things metabolizing in higher temps, so....