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Naturally porous
a fish net
real calcium carbonate rock based formations complete with living
Every rock contains a network of micro and macro pores that intertwine within the rocks internal structure creating the perfect environment for natural nitrifying bacteria
it is perfect for the planted aquarium
UNS 2025 Catalog Book Flattener Naturally porousLearn more about the Ultum Nature System and our expansive product lines. Filled with over 400 pages of product imagery and original content created in house. Softcover laminate finish Size: 11. 2" x 8. 7" x 1" (28. 5CM x 22. 2CM x 2. 54CM) Page Count: 440 Case Qty: 8 books