Quote:
Originally Posted by lockrookie
I was told different by a local reefer loooong time ago and just followed this practice of using old tank water to start a new tank. I do agree there can be a spike but less significant than if you use fresh mix with no bacteria whatsoever.
When I transferred everything from my 90 to my 180 I did a process I will call transfusion I actually pumped back and forth from one tank to another for a week before transfering Rock coral and fish over. I had no spike whatsoever in the swap
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Ya, I hear this all the time, but it's not true. Water contains so little bacteria that you wouldn't notice old from new in any kind of new tank, QT or otherwise.
If you did this thing above, and then transferred rock over, then that is where your bacteria came from. I transferred my 90 into my 180 with all new water, no spike or anything else either
The bacteria is on/in the rock.