Comment by Uncle Phil on May 1, 2013 at 12:22pm

play sand is one of the most commonly used sands in aquariums, But it is a very fine sand, almost like sugar. It requires alot of rinsing. If you do not rinse it, expect a cloudy tank whenever the sand is kicked up by the fish.
Beach sand has been used. I myself had my grandfather pick up some sand at the beach, and i used it in my aquarium. Nothing happened, But there are risks with this. Beach sand contains chemicals in it. Sun screen, makeup, and anything that whips off of a persons hands or body goes onto the sand. Use with caution, or don't use at all.

Play sand - . usually comes in a tan color, 30 to 50 lbs bags, price 3 to 6 dollars. Rinse very well

Blasting sand -  usually comes in huge amounts from 50 to 100 lbs bags, price 5 - 20 dollars. Colors very from black to white, rinse aswell.
Pool filter sand - If you live in a area with a pool store, you can usualy find this stuff. Pool filter sand ranges from 30 to 50 lbs bags. This can sometimes be very expensive. But it comes in a very very bright white color. 10 - 50 dollars depending on bag size and store. 

Beach sand - Absolutely free, But remember that there is always risk of urine, feces, chemicals,  bacteria, or parasites in the sand. Use with risk. rinse very very well

Comment by Zach on May 2, 2013 at 4:21pm

Quickrete play sand makes a great substrate for a cichlid tank. It's cheap, ranging from $3-4 depending on the store. This is found at homedepot and lowes.

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