Yeah that's always possible but we are doing good for now I moved my other FX5 to my main tank since I'm not using the other tank anymore. so I have the added bio from that filter to help.
golcondorus;3719393; said:
also, if there are nitrates in your water, boiling it will concentrate the nitrates and make them more toxic to your fish
Wouldn't work we don't have enough rain/snow here to do a WC with and I would have to store the water in something until it got back to at least room temp.