Volcanic rock powder for aquarium JBL ProScape

Long-lasting supply of minerals to plant roots: primitive volcanic rock powder for aquascaping Use: 250 g per 200 l. Simply spread the powder on the bottom glass or on the bottom layer of substrate from sol, cover with the top layer of substrate from sol. Long-lasting fertilizer: primitive rock powder rich in natural minerals and trace elements. Fertilizes plants for around 12 months. Delayed effect: enriched with macro-nutrients for optimal, long-lasting growth of aquatic plants Contents: 250 g volcanic rock powder, sufficient for a 200 l container (surface area at sol approx. 100 x 40 cm).