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cycling when upgrading

9 years 5 months ago #25450 by whetfish
Replied by whetfish on topic cycling when upgrading

Moving all the water will not be as important as the other items as the majority of the bacteria live on porous surfaces (such as filter media) and not in the water column.  Adding as much "temporary" gravel as you can will help.  You should be alright by transferring the rock and all the filter media you already have established.  Your bio-load will not increase as long as you don't add a bunch of fish immediately after setting up the new tank.  Add fish slowly as you would to any new tank and you should be fine.


Sound advice.

Your bioload is determined by the number of fish you have in your tank not the amount of water.  If you want to increase your bioload quicker think about getting recently used media for your second fluval 405 when you set it up.

Not checked for facts.

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9 years 5 months ago #25443 by FishandFire
Replied by FishandFire on topic cycling when upgrading
Moving all the water will not be as important as the other items as the majority of the bacteria live on porous surfaces (such as filter media) and not in the water column.  Adding as much "temporary" gravel as you can will help.  You should be alright by transferring the rock and all the filter media you already have established.  Your bio-load will not increase as long as you don't add a bunch of fish immediately after setting up the new tank.  Add fish slowly as you would to any new tank and you should be fine.

There is a very fine line between fishing and standing on the shore looking like an idiot--Steven Wright

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9 years 5 months ago #25437 by bortko76
I am upgrading from a stocked 55g to a 125g in a few weeks and I am looking for advice on moving my fish.  I will not be using any of the existing gravel since I see a new tank an opportunity to switch to sand, I have 1 fluval 405 set-up with 2 trays of ceramic rings and 2 trays carbon, I just set up a second fluval 405 with all 4 trays ceramic rings figuring that more rings=more bacteria which will be more important than carbon for the first month.  I will be transferring all the water and rocks to the 125g and I can probably fit 25lbs of gravel into spare media bags and place that in the 125g until it can stand on its own.  I am hoping that this will be sufficient enough that with weekly 50% water changes my fish will be safe.  Any feedback and suggestions would be greatly appreciated.

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