"change of greater than 0.3 pH" - ludicrous to anyone who knows any chemistry. Whoever wrote this either made it up or copied it from someone else who did. Hint: pH is a log scale, not a series of units (like, say, temperature). Huw Powell 00:23, 17 February 2011 (EST)
- pH is a log scale, but as most aquariums should not move more then 1 unit from where they should be ideally, a linear approximation is appropriate for the non-mathematically inclined. The point we should be making is, 'how would you like it if we suddenly pored chlorine down your throat?' --Brian 08:38, 17 February 2011 (EST)
"CO2 excess during the night or when the supply of CO2 changes and the KH level in the water is too low (typically less than 4dKH (~70ppm)) so causing large pH changes. Usually this happens when your water is soft."
Completely false. pH change as a result of CO2 does absolutely no harm to livestock.