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[AGA-Member] Re: Hello, and a question
I think that what you are seeing (in addition to a response to nutrients
that may be added to the tank by water change) is that the oxygen that the
plants were always producing is now visible due to the gas saturation of the
water just added. Pressurized water contains gasses, I see this in filing up
a bucket for aging discus water, it gets bubbles even though there is not
anything in the bucket but a heater, no air, no plants, yet bubbles collect
on surfaces when normal city tap water is used.
In the tank this means that since the water is saturated, or rather
oversaturated now that the pressure is not at 30 or 60 psi, so some of this
normal gas content must come out of solution as bubbles. So, the additional
oxygen the plants are producing cannot go into solution in this
oversaturated solution, but collects as bubbles and rises from the plants.
The normally invisible is now visible. You can add a capful of H2O2 to the
tank to saturate the water with oxygen and see the same effect.
I have a 110 high with 4x96 pc lighting, co2 on a pinpoint controller, and
I add N, P, K, Flourish, Flourish Trash, Fe, and Kent Freshwater plant
daily. I have little algae growth and fairly good plant growth. When I
change my water, things go nuts! There's all kinds of bubbling for the
rest of the day. It's not dissolved gasses coming out of the water
because I can actually see the plants bubbling like growth bubbling. What
could the plants possibly be getting from the tap that I'm not adding, and
how do I find out what it is?
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