New Tank

Davy

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I have just got a 155 litre tank and want to transfer the stock from my 60 litre tank into it.

Any advice on the safest stress free way to do this (for the fish) I can deal with my own stress. :crazy:
 
I recently did this for my tropicals. I added half the old gravel and i had the new filter running in the old one for 4 weeks then transferred it over to the new one. I let it run for a couple of days empty with the new filter *juwel* and then added a few guppies to keep the ammonia level going, you could add one of your fish. Leave it for a week and then add another fish. Keep testing your water for ammonia and nitrites and do water changes if anything goes over 1. You might be lucky and have no noticeable level change.
Leave for a few more days and then add whats left.
How many fish is there?
 
You don't need to go through all that.

Just catch all the fish and transfer them into a bucket (make sure you cover it so you don't get any suicides while you're at it). The darkness will keep them calm while you do all the work. If you have a bubblestone, put it in the bucket as well to provide extra oxygen. If you don't have one, just check the fish from time to time to make sure none are gasping for air and work relatively quickly so they don't need to be in the bucket too long. Alternatively, if you don't have a big enough bucket, bag the fish an let them float in the old tank.

Now transfer the majority of the gravel and any filters from the old tank to the new. If it isn't already filled up with fresh, de-chlorinated tap water, do that now. Just a note here - if you add the filter and gravel to the tank and THEN fill it up with water, make sure you de-chlorinate the water BEFORE you put it in the tank - otherwise the chlorine will kill all the good bacteria in your filter and gravel which elliminates the purpose of using them :p.

Don't use any of the old water in the new tank. It doesn't contain anything useful.

Then turn on all the equipment - lights, filter etc. Just make sure everything's working ok and then start adding the fish from the bucket. If you have been keeeping up with water changes in the old tank, there should be no noticeable difference in water chemistry so the fish will be fine as far as this goes so acclimatizing each one isn't necessary.

The reason you don't need to wait to add all the fish at once is that the old filter and gravel contain all the bacteria necessary to support the fish that you are transfering. If you let the tank run without fish (and therefore without a source of ammonia) for more than 2-4 hours, the good bacteria starve and start dying. That can only lead to ammonia or nitrIte spikes so is not good for the fish.

If the new tank also has its own filter, run this along with the old. After about 2-3 weeks, you can remove the old filter as enough bacteria should have colonised the new. Alternatively, rather than moving the whole old filter to the new tank and running it alongside the new tank's filter, just transfer the old filter's media to the new filter.
Also, if you want to use a different gravel in the new tank, put the gravel from the old tank into a ceramic bowl or a (new) stocking and place it in the tank so that it doesn't mix with your new substrate. After a month or so you can remove the old gravel bit by bit - but don't remove it all at once.
 
i hate netting fish and try not to do it to often.

i recently moved a goldy and someminnows to another tank and i did this:

lowered a clean bucket into the tank with the fish and heard a few in lift out do the same with another bucket and the rest of the fish. then in the new tank add the rest of the old tank water, all the gravel, filter and decs,i then added a buit of treated tap water then lowered the bucket into the tank and let the fish swim out maiking sure the temp was fine. then topped up with treated tap water as neccessry to fill the tank


basically all you are doing is a water change but removing the fish and adding them back to the newer tank but with the same tank water, gravel and decor and filter

there is no need to use the old water but using "the buckets" method means you will be using tank water
 

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