Switching Tanks To A Larger One

[NewTankGuy]

After getting some advice, I am looking into switching my 29 gallon tank to a 60-75 gallon, but I do not know the best way to do this.  I want to put my new larger tank in the exact same place in my office as my current 29 gallon tank, and I want to move all the fish I have in the 29 into the larger tank.  But due to the 29 being full, and cycled, and the new tank will not be cycled (or not even bought at this point), how do I do this?  As in, should I set up the new tank in the garage and cycle it, then break it down and do the transport? I am just trying to think of, and understand the best way to do the switch with the least amount of issues, and without stressing my fish to death.  Seeing that once set up, you cannot simply slide one fully set up tank around the room.
 
Also I am assuming that I will want to use the gravel and like 80% of the water from my healthy and cycled 29 gallon tank into my new larger tank, is that correct?

 

[Ch4rlie]

If you have a large container or another tank, you can use this to put your stocking in for short term, add heater and airstone to keep water at optimum temp and oxygenating.

Then empty the rank out, put new tank into position, put all the gravel in the new tank, replant and put decor in etc etc, if its a new filter put all the filter media from old to new or simply put the existing filter in new tank.

Refill with new dechlored water, putting in old tank water wont do a lot tbh.

Get water to temp and ensure all running ok, put fish in tank.

Test the water regularly for first week or so, you may get mini cycle or spikes occurring, do water changes as appropriate.

that's a very basic description but you do need to plan ahead in mind what order you want to do things. Having a mate or family members to help shift tank and help clean up, as can be quite z messy process with the substrate, would help a lot. Not a particularly quick job to do something like this, so ensure you have at least 2 - 3 hours to do this.

 

[Wills]

I have gone from 33 liter to 125 liter to 240 liter to 512 liter over the years and every time I have just done it as you would think. i.e: drain existing tank, put fish in buckets, put filters in buckets, move empty small tank - move new big tank into position - fill new tank, put heaters on and get upto temperature, add fish add filters and your done Just dont be tempted to add new fish too soon. The basic way of thinking is it is; same fish + same filter bacteria, just more water so the cycle should be exactly the same.
 
But extra tests are always a good idea, just so you know exactly what is going on
 
Wills