Originally Posted by begginersluck
So it's a wonder why many reef enthusiasts are completely against sand and have either none at all or a very minimal amount at the front for decoration purposes only.
I would never reuse sand. Everything that doesn't go down your overflow or eaten by your cuc will sit in the sand bed and stew. Why would you want to stir that up and allow it into a new system? I would much rather rise it and reuse it or for the sake of a few quid buy new stuff. Even if you buy dry sand and rinse it it will become 'live sand' before you know it.
If you got the CUC in the sand bed, why would you want to kill them? They will eat what is mostly in the sand bad. You stir up the sand bed to release the gases before moving it. That way the pockets of gas will not release in the new tank. Of course if your moving the sand to a new tank it's going to be release anyway when you move the sand. Where some people get in trouble is when they move the tank and set the tank back up with the sand bed hardly being touched. The gas pockets might release than and kill the fish!
When You rinse live sand you kill everything that is in it. All the beneficial Bactria would be gone. Sure it becomes live again in a few months, but why kill everything when you already got it? That's like buying live sand at the store and rinsing it out effectively making it no longer live and wasting your money. Some people tell people to do that on this website! I was told to take the live sand I just bought and rinse it from the bag with fresh water. Why? Why waste what some people pay loads of money for?
When I moved my sand over, I simply took the top layer off and threw it away, but the deep stuff I kept and used it for my tank. It still looks good and white with no issues. It's been close to 8 months and my tank is still going strong, and I have not had a single water quality issue! Plus my sand is still as white as the day I bought it!