McDonald Lake

The McDonald Lake Nano Boulders are a stunning addition to any aquarium or terrarium. These rare and unique stones come in shades of dark red, maroon, green, blue, and black, adding a beautiful and colorful touch to your aquascape. The stones are named after the Glacier National Park's biggest lake in Montana, USA.

The colors of the McDonald Lake Nano Boulders come from the iron content in sedimentary pebble rocks and the degree of their oxidation. These rocks were formed over millions of years under different conditions, resulting in the stunning colors seen today. During the Ice Age, giant ice blocks ground the lake rocks into small colored pebbles, which were then brought into the valley by streams of melt-water.

The McDonald Lake Nano Boulders are perfect for creating a unique and colorful riverbed impression in your aquarium or terrarium. They are available in sizes under 10 cms and can be complemented with larger McDonald Lake Boulders. Some boulders may raise pH and hardness slightly, but regular water changes can keep the hardness under control.