When placed in groups they have maximum effect and plants really complement them. It's a finely detailed stone with many crevices and holes. These crevices are perfect for planting mosses and small plants. The rocks are most effective when used in groups to form the main foundation to your aquascape with plants placed around them.
Small Stones .5 - 2lbs / 6" x 4" x 3.5" approx.
Medium Stones 2 - 6lbs / 8" x 6" x 4.5" approx.
Large Stones 6 - 11lbs / 11" x 8" x 6" approx.
(All weights are approximate and rocks vary in width and height.)