![Fluval Stratum - 4.4 lb Stretchy Riboflavin Supplement [Vitamin B2]](https://cdn.shopify.com/s/files/1/1772/9591/files/fluval-stratum-44-lb-486024.jpg?v=1770365384)
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Riboflavin Supplement [Vitamin B2]
• Case of 15 large (8 oz) filled bones
• Grain‑free formula with added pre‑ & probiotics (100M CFU/lb)
• N&D Pumpkin puppy formula featuring codfish with cantaloupe
Fluval Stratum - 4.4 lb Stretchy Riboflavin Supplement [Vitamin B2]Fluval Stratum is a volcanic soil collected from the mineral rich foothills of the famous Mount Aso Volcano. It is an ideal substrate for stimulating the growth of aquatic plants in freshwater aquariums. Roots are easily able to penetrate and spread throughout this substrate, allowing plants to obtain a variety of readily available nutrients. The addition of Fluval Plant Micro Nutrients also ensures a full complement of essential micro and macro