Its moving time (advice needed)

[Josh23]

Its not a big move. Just from one room to another.
The Plan!!!!

1. Catch fish and put in individual 5 gallon buckets
2. Remove all rock and put in large rubber maid garbage can
3. Remove water down to sand level.
4. Pick up tank and move to next room
5. Replace

Question is
How long can the fish stay in the 5 gallon buckets
If the 50 gallon tank with 4 inch sand bed is to heavy to lift and I have to take out some sand is if going to release chemicals into the remaining water. What should I do?
Thanks
Josh