Moving into a 160g

[mark]

I moved from a 75g tank and separate 33g crammed full of LR to a 200g (total system) in a day without problems.

Ideally should setup the 160g with the base rock, new salt water and some old then let it get established before adding the stuff from the 40g. I'd skip the sand, though maybe add some off the top for seeding.

[fdiddy]

If i rinse the sand then can i use the old stuff? Seems like a waste to me. I have no problem buying new sand - which I have done already.

[fishytime]

As said, use a few cups of the old sand to help seed the new sand. If you want to use the old sand rinse it and let it dry out. Keep it for top-off sand for when you end up siphoning some sand out.