Caribsea's Ocean Direct Caribbean Live Sand is a great choice for aquarists who are wanting a reef tank set up in minutes. Oolite Ocean Direct Live Reef Sand uses "Sea Breathe" technology to preserve the live sand in its own original ocean bacteria.
 
Features
Contains live ocean bacteria resulting in a fast cycle
Grain size: 0.25-1.5mm
High Surface Area for Bacteria
 
Available in various shades and sizes:
Original Grade - 0.25-6.5mm
Oolite - 0.25-1mm
 
How much sand do you need?
ALS suggests 1 pound of sand per 2 gallons of display tank volume on average.
 
Below is a table of common tank sizes and how many pounds of Oolite Sand is required to achieve a certain depth. Results may vary depending on the aquascaping in your tank, overflow styles, and the specific tank manufacturer. We always recommend getting a little extra sand to make sure you have enough on hand when you are filling your tank. 
 
Gallons
Dimension
1" Depth
2" Depth
3" Depth
10 Gallon
20x10x12
11.9 lbs
23.8 lbs
35.7 lbs
20 Gallon
24x12x16
17.1 lbs
34.3 lbs
51.4 lbs
29 Gallon
30x12x18
21.4 lbs
42.9 lbs
64.3 lbs
30 Gallon
36x13x16
27.9 lbs
55.7 lbs
83.6 lbs
40 Gallon
36x18x16
38.6 lbs
77.1 lbs
115.7 lbs
55 Gallon
48x13x20
36.4 lbs
72.7 lbs
109.1 lbs
75 Gallon
48x18x21
50.4 lbs
100.7 lbs
151.1 lbs
90 Gallon
48x18x24
50.4 lbs
100.7 lbs
151.1 lbs
120 Gallon
48x24x24
67.1 lbs
134.3 lbs
201.4 lbs
180 Gallon
72x24x24
102.9 lbs
205.7 lbs
308.6 lbs
220 Gallon
72x24x30
102.9 lbs
205.7 lbs
308.6 lbs
300 Gallon
72x36x27
154.3 lbs
308.6 lbs
462.9 lbs