Please check http://www1.lsbu.ac.uk/water/water_hydrogen_bonding.html as it is a really great source for information on the water hydrogen bonds. I did not analyze everything yet but some points can be really interesting in getting the gas production rate up. Please read and analyse the following quote from that article:
"There is a trade-off between the covalent and hydrogen bond strengths; the stronger is the H····O bond, the weaker the O-H covalent bond, and the shorter the O····O distance. Interestingly, this means that the O-H covalent part of the hydrogen bonds gets shorter as the temperature of the water increases. The weakening of the O-H covalent bond gives rise to a good indicator of hydrogen bonding energy; the fractional increase in its length determined by the increasing strength of the hydrogen bonding; for example, when the pressure is substantially increased (~ GPa) the remaining hydrogen bonds (H····O) are forced shorter causing the O-H covalent bonds to be elongated. Hydrogen bond strength can be affected by electromagnetic and magnetic effects. Dissociation is a rare event, occurring only twice a day that is, only once for every 1016 times the hydrogen bond breaks. The anomalous properties of liquid water may be explained primarily on the basis of its hydrogen bonding."
It also seems that contaminants (or dissolved substances) in the water play a big role in covalent bond strengths which may indicate that the use of distilled water is making the bonds break more difficult and the use of rain or tap water should be preferred even if it impacts resistance and current leakage.
"There is a trade-off between the covalent and hydrogen bond strengths; the stronger is the H····O bond, the weaker the O-H covalent bond, and the shorter the O····O distance. Interestingly, this means that the O-H covalent part of the hydrogen bonds gets shorter as the temperature of the water increases. The weakening of the O-H covalent bond gives rise to a good indicator of hydrogen bonding energy; the fractional increase in its length determined by the increasing strength of the hydrogen bonding; for example, when the pressure is substantially increased (~ GPa) the remaining hydrogen bonds (H····O) are forced shorter causing the O-H covalent bonds to be elongated. Hydrogen bond strength can be affected by electromagnetic and magnetic effects. Dissociation is a rare event, occurring only twice a day that is, only once for every 1016 times the hydrogen bond breaks. The anomalous properties of liquid water may be explained primarily on the basis of its hydrogen bonding."
It also seems that contaminants (or dissolved substances) in the water play a big role in covalent bond strengths which may indicate that the use of distilled water is making the bonds break more difficult and the use of rain or tap water should be preferred even if it impacts resistance and current leakage.