Aquavitro Aquasolum™ is a lightweight, porous substrate derived from humic substances and minerals. Humic substances may increase the uptake of micronutrients.

Ingredients: leonardite, rhyolite, biotite, quartz, feldspar, obsidian, and amphibole
CONTAINS OTHER NON PLANT FOOD INGREDIENT(S):
1.12% Humic Acid (from leonardite)

Directions
Although it is pre-washed, it may become dusty in transit and require rinsing before use to remove any residual dust. To determine the number of bags required for your aquarium, please note that each bag (2 kg, 4.4 lbs) occupies a volume of approximately 1,630 cm3 (100 cu. in.). To determine your desired volume multiply tank width by length by desired depth.

TIPS: When adding water to aquarium, fill slowly to avoid disturbing aquasolum™ bed. Place a bowl in the aquarium and add water directly to the bowl, allowing water to overflow softly onto the substrate bed. Initial cloudiness is normal. To remove cloudiness, use mechanical filtration (such as filter floss). Use Seachem Clarity® to accelerate clearing.

Additional Info:
https://www.aquavitro.com/aquasolum.php