old water, new tank

[BubblesandSqueak]

so I'm not planning to do this but got me wondering....If cycling a new tank, would it go quicker of you use the spent change out from another tank? I tried doing a quick search but didn't see anything. I know that you're changing out for a reason but if you have a clean tank, would there be any benefits to that?

 

[blaxsun]

Yes and no. Most of the beneficial bacteria is on the rock, glass (etc.) and much less in the water column itself. Existing tank water, filter floss/pads, etc. can be used to accelerate the process in cycling a bunch of dry rock for later use in a tank to insta-cycle it.

There are always benefits from starting fresh with a clean tank (new sand, water, rock, etc.). Products like Bio-Spira also let you insta-cycle a tank so it's immediately ready for use.

 

[littlefoxx]

so I'm not planning to do this but got me wondering....If cycling a new tank, would it go quicker of you use the spent change out from another tank? I tried doing a quick search but didn't see anything. I know that you're changing out for a reason but if you have a clean tank, would there be any benefits to that?

I used 5 gallons of my cycled water from a water change on my bigger tank and 10 gallons fresh saltwater To set up a 15 gallon nano. Results seemed okay, took less time to cycle cause it already had an ammonia source for the cycle, but it will need a few water changes before its fish ready

 

[jda]

There can be up to a million bacteria in a gallon of water. I doubt that you will find proof either way that it is good or bad, but why not? If there is bad, it will come with the good.

 

[Crabby48]

One good is you can start your tank with a little no3 and po4

 

[CoralB]

Is the reason your moving into a new tank because you had a outbreak of something ?? Bubble algae ? , bryopsis ? Any disease ?? . If you transfer water or rock etc. you will risk bringing it into the new tank . I agree with Blaxsun . Starting new would be the way is go IMO.