3DM Star Stone 3DM Star Stone is a high-quality biological filter material designed to be an efficient habitat for microorganisms, helping to decompose waste in water, reduce ammonia, and balance the water quality in fish ponds sustainably. ✔️ Special porous material increases the adhesion area for microorganisms. ✔️ Durable, long-lasting ✔️ It is one of the most popular biological filter materials on the market today.

 Width 13 Height 9