Ultum Nature Systems (UNS) Controsand Kona (3L) is a 100% natural, rounded pebble gravel substrate designed for freshwater aquariums, planted tanks, terrariums, and paludariums.

Key Specifications:

• Grain Size: Measures approximately 3 to 5 mm.
• Appearance: Features smooth, rounded pebbles in deep charcoal and earthy tones. According to Ultum Nature Systems, the gravel looks matte medium-grey when dry and shifts to a deep, glossy jet-black when submerged.
• Water Chemistry: Completely inert, meaning it will not alter your aquarium’s pH or water hardness.
• Livestock Safety: Smooth, rounded grains prevent injury to shrimp, bottom-dwelling fish, and reptiles.

Usage & Aquascaping Tips:

• Preparation: Rinse the gravel gently with clean water before adding it to your tank to wash away fine dust and ensure clear water.
• Placement: Use it as a standalone base layer, a foreground detail, or mixed with nutrient-rich aqua soils for a layered riverbed look.