Adding a sand bed at a later time.....

[lpsreefer]

Doing it adding small amounts but remember to rinse the sand first the super fine powder sand plays havoc on a system.
I ran I test in my little tank by putting sand in a container put it to te down of my tank under down after rinsing and then just let gravity push the sand out worked out well. But it was only a 20 gallon with damsels. Two pieces of live rock. Didn't cycle or have any spikes. The test was only a week long.

You just gotta avoid the cloudiness by stirring to much sand up.

[morecowbell]

I want to do the same thing, however right now my tank has about 2-2.5" of crushed coral on the bottom. I got it on recommendation from lfs and thinking I'd like it but it's been in there for 6 months now and I hate it. So how do I go about removing it safely? I have a 65g.

Should note that I do vacuum a selected area whenever I do a water change. So vacuum say 1 corner, and next change do another corner.

[Leah]

I have added and have taken away sand...no biggie. Maybe go slow if at all worried.