Unipac are a trusted and quality supplier of substrates for aquariums. This Nordic 6-8mm gravel is a neutral and natural looking gravel.
If you are looking for a natural aquascape substrate then this Nordic gravel will provide a great base. Also available in 2 other grain sizes, 2-4mm Nordic and 4-6mm Nordic
How much gravel do i need in my tank?
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
