After cycling is completed , change a part of the water before adding fish or not ???

minajaguar · 04/21/2012, 07:40 AM

After cycling is completed , change a part of the water before adding fish or not ???
And after how long can i add fishes just the day i found NH3 , NO2 = 0 ,, "add immediately or wait some days"

BCreefmaker · 04/21/2012, 10:27 AM

What are you NO3 levels?
If you have no ammonia, nitrite, or nitrate (NO3) then you are good to add fish and a few snails or crabs if you like. No water change is necessary, but you can start a 10-15% water change per week routine now if you like.

MrTuskfish · 04/21/2012, 10:46 AM

I would wait until your new fish, and every new fish, spend 6 weeks in a QT.

dunc101 · 04/21/2012, 10:55 AM

Quote:

Originally Posted by MrTuskfish

I would wait until your new fish, and every new fish, spend 6 weeks in a QT.

+1 to what MrTuskfish said. Remember that the bacteria resides on your rock, therefore, you could do a 100% water change if you really wanted to without affecting the biological filter. The main goal is to get your nitrates below 20, then add a part of your clean up crew (do not add them all at once because you likely do not have enough algae to sustain a full clean up crew just yet).

At this time, I would also start a QT if you have not already and place all fish in here for 6 - 10 weeks to observe for any parasites and/or disease. Unfortunately, we cannot treat sick fish in the DT which is why many use a QT. If it is not cycled, you can take a sponge from your DT (since it is cycled) and place it in your QT. Just use a simple HOB filter, a powerhead and / or a bubbler (4 bucks at walmart) and place a few pvc pieces for the fish to hide in for the QT. You will probably also want to buy a seachem ammonia alert badge for the QT just to make sure no ammonia arises while the fish is in QT. This can be as simple as a 10 gallon or 20 long.

04/21/2012, 07:40 AM	#1
minajaguar Moved On Join Date: Mar 2012 Posts: 112	After cycling is completed , change a part of the water before adding fish or not ??? After cycling is completed , change a part of the water before adding fish or not ??? And after how long can i add fishes just the day i found NH3 , NO2 = 0 ,, "add immediately or wait some days"

04/21/2012, 10:27 AM	#2
BCreefmaker Registered Member Join Date: Jun 2006 Location: B.C. Canada Posts: 1,129	What are you NO3 levels? If you have no ammonia, nitrite, or nitrate (NO3) then you are good to add fish and a few snails or crabs if you like. No water change is necessary, but you can start a 10-15% water change per week routine now if you like. __________________ To make apple pie from scratch, You must first create the universe.

04/21/2012, 10:46 AM	#3
MrTuskfish Registered Member Join Date: Sep 2007 Location: The Wild Blue Yonder Posts: 8,887	I would wait until your new fish, and every new fish, spend 6 weeks in a QT. __________________ If God didn't want us to eat animals, he wouldn't have made them out of meat. Steve Current Tank Info: 180, 2-240 FOWLRs, 240 reef