switchin tanks

[ocean]

I want to switch my SW tank into the 75g. would i need to cycle the tank if i buy new sand and use RO/DI water. i think i read somewhere i can use sand i have now to seed the new stuff. thanks for any help greatly appreciated.

[jerryc]

I changed out my 29 to a 55 and used all the water and rock from the 29

I set up the 55 with the sand and water added the extra rock run for about
30 days till all nitrates and ammonia was gone.

Removed enough water from the 55 so i can use most of the water and rock from the 29 and made the switch

[bjpembo]

i moved my 75 300 miles and set it right back up, didnt really change or add anything but i didnt have a cycle. if your just moving to a larger tank and are going to use all your sand and rock and add some to it, as long as the rock that your adding is cured you shouldnt have any trouble.