I'm looking for an easily replicable experimental manip Dear Ecolog-L, I'm looking for an easily replicable experimental manipulation of dissolved oxygen levels in freshwater microcosms (~20 liters). Bubbling the water has additional effects that are difficult to control for. Does anybody know whether there are non-toxic oxygen absorbing capsules that are devoid of other chemical effects on the water? Other simple and cheap solutions are welcome.
Thank you, Asaf
