I have to say the chances of you putting too much oxygen in the water for your fish is about nil. too much flow for your fish is going to be a factor long before too much oxygen will for any fish. like to super oxygenate your tank you would need ocean surf conditions in your tank with constant churning that would beat your fish to death long before oxygen levels reached toxicity. do you know why fish in rivers and streams are usually right below the rapids areas? because thats where there is the most oxygen..... now using the amazon as the previous poster did yes co2 levels are higher but that doenst mean that o2 is low..... the two are not mutually exclusive in water as some people seem to think its not a one or the other scenario you can have good oxygen levels in high co2. or any combination of the two.
as to the original question. burst co2ing is going to throw your tank in a constant state of change. so here is my pet scenario.
1 normal oxygen/co2 level, aerobic bacteria develop to a sustainable population size to the "normal" levels.
2 run co2 for a short time upsetting the regular o2 co2 balance, possibly smothering the aerobic bacteria due to higher co2 levels, definitely swinging your ph into a drop, increasing acidity.
3 bacterial die off, increases ammonia levels in the water not as dangerous in low ph conditions.
4 turn off co2, co2 levels drop spiking PH and turning the ammonia more toxic.
wash rinse repeat.
you are better off ihn my opinion to give a constant super low dose of co2 than you are swing your tank like a pendulum stability is always key to success in tanking. JMO
"[Wabi-sabi] nurtures all that is authentic by acknowledging three simple realities: nothing lasts, nothing is finished, and nothing is perfect." -original author unknown-
125g marine reef tank, 6 gallon fluval edge minimalist aquascape (in progress), 1 gallon aqueon evo 2 betta tank.
Last edited by Darkblade48; 06-16-2014 at 12:49 AM.
Reason: Back to back posts