This is probably a dumb question but reassure me -
I went to buy an air-pump for a temporary uncycled/unfiltered tank to help keep the water oxygenated inbetween water changed. I decided to buy the bigger pump as it seemed I would get more use out of it later.
But boy, that thing is pumping a lot of air! Is it possible to over-oxygenate water with an air-stone??