03-25-2011, 04:51 PM
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Originally Posted by Thoth
The beneficial bacteria is in the filter and in the substrate. If you move to the larger tank and add many more fish, the transferred bacteria may not be large enough to handle the fish waste. This could cause some spikes but should be easy to take care of with water testing and changes.
I have changed from a 20L to a 30 gallon. I put some of the tank water in a bucket, placed the fish in the bucket and set up the new tank. Once it was set up and the water temps were acceptable, I moved the fish from the bucket.
If you are moving the tank down stairs, I would still remove the fish first and remove almost all of the water. An empty 30 gallon tank weighs around 60 pounds and a gallon of water weighs around 8.5 pounds. It doesnt take long before the tank is too cumbersome to move. Plus the risk of the glass breaking during the move. You could remove substrate to another container to reduce the weight.
So if I were to put fish in a temporary house, then moved all the gravel, decorations and water to the 55 gal and then let it heat, then put the fish in they would be okay? I Would slowly add fish so that the transferred bacteria can adjust. Is the best way to transfer the bacteria moving the cartridge and sponge to the new filter?