I'm getting close-ish to upgrading tanks and am trying to decide if I should move the existing sand bed or go without one. I don't have the budget (or desire) to get fresh sand.
Here are the details:
~1.5 inches of CaribSea special reef grade sand (I think)
Well established (15 years old)
moving from a 36"x18" to 48"x18" footprint
I have some dry sand that I could add to maintain depth