When you say "And it takes ages to go away again. " does that mean that you are draining and refilling the tank each time hoping to get better results? Cause that's the opposite of what you should be doing.
Learn what "cycling" means and how it works and you'll have a much easier time of things. There are multiple ways to cycle a tank. Used (aka dirty) filter media from another healthy tank is my method of choice.
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gone. long gone.
aylasquareturtle .."a"t".. gmail dawt com
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