How many Bio-balls?

[The Real 118]

how many bio-balls (3/4") do i need to fill a space that is 5" x 9 3/4" x 10"? its alittle over 2 gallons?

 

[ar0wan]

approx 8 litres

 

[The Real 118]

http://www.petsmart.com/product/index.jsp?productId=2752375

it comes in packs of 90 balls idk how many packs to buy???

 

[ar0wan]

10 packs

 

[ar0wan]

I would get Seachem Matrix instead tho