We're often being asked questions like how many rocks do I get if I buy 5kgs and it's often difficult to say - all rocks vary in size and shape so we felt it was best if we took some pictures so you can visualise exactly what sort of quantity you would get for your money!
Below is a selection of rocks for your tank that come in10kg boxes. They are of course available in 5kg boxes and per kg.
Most rocks will have little effect on pH which is generally a big concern for hobbyists. They have all been sand blasted so no sharp edges are left.