Fishlover3578
Aquarium Advice FINatic
I would not do a goldfish ... They have big bioload
I have cory catfish 5 ,zebra danio 8, 1platy , 1 dwarf honey sunset gourami , 2 male fancy guppy, and 7 female guppy plus thier fry in. 29gal an they get along great Cory cat are cute bottom feeders I have 2 Julii and 3 peppered .
You can also change backgrounds
Yes sand is fine
You will need to rinse it. What kind it is depends on how much.
Pool filter sand is what a lot of people use. It is cheap and can be bought at most hardware stores or pool places. The color is a natural beach sand look. Or if you want pure white sand you have to get it from a pet place. For black sand you can use Black Diamond blasting grit which you get at hardware stores. Get the one that says coal slag. To rinse it you just pour some in a bucket about halfway full then use a water hose. Hold the water hose under the sand and spray. Tilt the bucket a little and the dirt and impurities will wash out of the bucket. Keep rinsing until the water stays clear. Doesn't take too long doing it that way. The black would show off colors nicely. You could add marbles in holiday colors on top of it to change it for the holidays. Or different glass stones and decor.