Magikalgirl79
Aquarium Advice Regular
My penguin bio filter died so I had to purchase a new one. I put filter media from the old in the new to keep the beneficial bacteria in the tank. Question is how long should I leave the old filter media in so the bacteria can be good the new filter? I really don't want to lose any fish because if this. Thanks
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Sent from my SM-N900W8 using Aquarium Advice mobile app