I have a 125 gallon aquarium with a wood cabinet stand and lids for sale.
The tank is "fish room quality" which is why it's priced to cover just the filters and the stand. To take the filters and the stand, you MUST take the tank. What you do with it afterwards is completely up to you. It holds water. It also has a hand-made 3d background that can possibly be removed (siliconed in) but I'm not certain. You will also get any extra eheim parts I have around.
The stand can be used for 150 or a 125 (or really any tank with that same footprint). I will have it out in the garage Thursday night, at which point it is available. You will need to bring help to move it and you will need a truck.