Originally Posted by Elsewhere
Okay, I'm starting to lean towards sand... My issue is, I have no clue how to clean it or get to be healthy for the fish :/ Any tips on what I can do with that?
Sand is really easy to clean. Just take a clean (never had any chemicals in it) bucket, fill it halfway with sand, and pour water in the bucket. Swish the mixture around and then pour off the water as many times as it takes for the water to run clear. It takes work, but it's worth it. Poop doesn't get stuck down in the sand.
As for finding sand, most pet stores will carry some kind of sand. I'm partial to black sand because it will make the colors of fish really stand out. If you get any kind of sand that is intended for marine systems make sure you rinse it really well as it will likely contain some salt. Goldfish tolerate salt very well, but it's still not something you want to use unless you are fighting off a specific illness.
And goldfish will constantly graze in the sand, too.
The only difference is if any is swallowed, it will just pass through their system instead of presenting a choking hazard.