tank moving

So I am moving my tank across my bedroom and it is 20 gallon aquarium it probably weighs around 190 -200 pounds I will be moving it on its piece of furniture by sliding it. How much water should I remove and should a take out rocks?

Hello. Just to preface when I was 16 I started my first nano reef and it was an amazing success. However, when I started college I had to get rid of my tank because my dorm would not allow it. Now, I am 22 and I just graduated college and moved to the city for my new job. Yall I have missed my...