how does 10lbs of sand cover 75 gallons? i used 60lbs of that stuff for a 50 and a 10 gallon tank. just used 100lbs of playsand for a 120jpjn;905047; said:The Ultra Reef (I have an unopened bag right here) was $2.99 for a 5 pound bag. What size is your tank? Remember, you really aren't supposed to have it deep. Just a thin layer. 2 bags in a 75 is more then enough.
My son went and bought a big bag for the 220 and ended up having to scoop alot out. Whatever sand you do get, just make sure you move it around in the thicker areas which your fish don't use as much. This prevents toxic gas build up.
I've never had problems with the ph.