Best way to do the switch

  • We are currently upgrading MFK. thanks! -neo
Lark said:
If it were me I'd go ahead and use some of the same water from the 55 to the 90, if only to help lessen the possible shock to fish. It is not so much as keeping the same bacteria, but maintaining a pH and so on that is similar enough to what the fish were used to. There's always going to be a little bit of fluctuation for the fish to adjust to, but there'll be less of that. Consider it more like a 30-40% water change into a different container.

Otherwise, go ahead and fill up your 90 with new water, then treat your fish like you just got them from a pet store and acclimate them that way. Much riskier though, with then having to later worry about a water crash.

If you can, use the same filter media from the 55 to the 90. That'll help with the tank cycling. Especially if you decide to use all newly treated water.
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As long as you keep the filter full of bacteria and running its fine, all that new water will basically be a huge great big water change for your fish. if you do add some old tank water don't add too much
 
Thanks for all the suggestions I think I will keep most off the water from the 55 and use it to fill half of the 90. I will keep the fish in a bucket with a bubbler while the water heats up and run the filter on it as well. You think this is a good way to go about it?


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