A
Anonymous
Guest
Dear Julian-
first, thanx for your very interesting article on plenums.in the article you state:
could you please provide a link with how the levels of O2 were measured, and what they were?(and whether or not they remained constant?)
a more general question i have is also-what are the actual relative dissolved O2 levels required/favored by the various types of bacteria? i.e.-at what point does an environment favor the development of anoxic bacteria,as opposed to aerobic bacteria, vis a vis the O2 level present?
the main reason i ask is that in this ever continuing debate, i have yet to come across scientifically based data to justify the assertion that either way functions better, or more efficiently, by either side of the debate coin, or an actual comparative measurement of both systems in real time setups, either plenum, or dsb.
if you know of any results/tests around(from Dr. Jaubert, as well)-i would greatly appreciate any input you could offer.
best regards.
first, thanx for your very interesting article on plenums.in the article you state:
There is some explanation for this of course, so my testimonial is not simply in support of a mysterious phenomenon. The plenum provides a layer of water that maintains a level of dissolved oxygen above zero. Therefore the gravel in Jaubert's system is sandwiched between the highly oxygenated aquarium water circulating above it, and the plenum water, which maintains a low but generally stable level of dissolved oxygen.
could you please provide a link with how the levels of O2 were measured, and what they were?(and whether or not they remained constant?)
a more general question i have is also-what are the actual relative dissolved O2 levels required/favored by the various types of bacteria? i.e.-at what point does an environment favor the development of anoxic bacteria,as opposed to aerobic bacteria, vis a vis the O2 level present?
the main reason i ask is that in this ever continuing debate, i have yet to come across scientifically based data to justify the assertion that either way functions better, or more efficiently, by either side of the debate coin, or an actual comparative measurement of both systems in real time setups, either plenum, or dsb.
if you know of any results/tests around(from Dr. Jaubert, as well)-i would greatly appreciate any input you could offer.
best regards.