Unipac are a specialist supplier of quality substrates and decoration for the reptile, bird and aquatic market. Discount Leisure Products are proud to be stockist of this Rainbow aqua gravel and we have it avaliable in sizes from small sample pack size off approx 100g, 1Kg, 2Kg, 5Kg, 10Kg & 20Kg bags
Rainbow gravel is a mixture of various coloured gravels to give a multicolour substrate to your fish tank. With a grain size of 3 to 8 mm it a standard size for an aquarium gravel substrate.
As a very rough guide for every 1ft length of Aquarium approx 10Kg of sand or gravel is required. This will give approx depth of 1.5" or 40mm
The calculation is as follows
Length x Width divided by 10. This then give the weight required in Lbs. To convert this to KG just divide the answer by 2.2
For example on a 4ft x 1.5ft long tank
48(inches) x 18(inches) = 864 divided by 10 = 86.4(lbs) divide again by 2.2 = 39.27KG