Does a 10G tank with 1 small goldfish and 2 very small Zebra Danios
need an air pump with an air stone? I have a power filter so that's
giving out some bubbles when the water falls into the tank.
Also, if an air pump is needed, is is better to have one air stone? Or
is it better to have a tube where there are a few different outlets
for bubbles to come out at different point in the tank?
Thanks,
Petre
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