After cleaning it up put it in the tank.
Now measure the certain amount of gravel to be at the bottom of the tank.
Now you add water into the tank.
Now you can add a big peace of rock or anything but you have to clean it first
Nowhere place it anywhere, where ever you like.
Now you measure the top fin to add into the water
And you also need to add some of stress zyme+
Now u need a filter
And you place it on top of the tank
And u place the inside part into the tank
You also have to put the heater inside of the tank to keep the temperature according to the fish and also the light because it also keep the temperature up
The you can start putting your fish in after everything is done