2nd Generation S Lotus Root Bacteria House for fresh water

Experience next-level biological filtration with the Mountain Tree Lotus Root Spiral Bacteria House II, a premium ceramic filter media engineered for exceptional water quality and long-term filtration performance. Featuring an innovative lotus root-inspired spiral structure, this advanced bio media maximizes surface area and water flow to create the ideal environment for beneficial bacteria colonization.

The highly porous ceramic construction provides superior oxygen exchange and supports rapid growth of nitrifying bacteria that help break down harmful ammonia, nitrites, and organic waste. Its unique spiral channel design improves water circulation throughout the media, reducing clogging while increasing filtration efficiency in both freshwater and marine systems.

Designed for koi ponds, bakki shower filters, sump systems, freshwater aquariums, marine aquariums, and advanced aquascaping filtration setups, Lotus Root Spiral Bacteria House II delivers outstanding biological stability and crystal-clear water conditions. The durable ceramic material maintains its structure over time and supports consistent filtration performance even in heavily stocked systems.

With an impressive open porosity rate and extremely high surface area, this premium filtration media helps create a balanced and healthier aquatic ecosystem for koi, ornamental fish, corals, aquatic plants, and beneficial microorganisms.

Key Features:

• Advanced lotus root spiral ceramic bio media
• Extremely high surface area for beneficial bacteria growth
• Improves biological filtration efficiency
• Promotes excellent oxygen exchange and water circulation
• Helps reduce ammonia, nitrites, and organic waste
• Open spiral structure helps resist clogging
• Durable long-lasting ceramic construction
• Ideal for koi ponds, bakki showers, aquariums, sump systems, and aquascaping
• Suitable for freshwater and marine filtration systems
• Supports crystal-clear water and healthier aquatic environments

• Free Shipping is valid for orders with a subtotal exceeding $199 and all orders will be shipped via UPS. Items purchased for delivery after 3pm will ship the following day. Items purchased for delivery after 3pm on Friday will ship Monday.
• Koi Fish and Live Plants only ship Monday- Wednesday. For orders placed after 3pm on Wednesday, the order will be shipped the following Monday.
• For Motor Freight (LTL) Shipments, oversized or heavy items unsuitable for traditional parcel delivery are not eligible for free shipping. These items will be dispatched through a motor freight carrier, as indicated on the product page. Once the carrier receives your order, they will reach out to arrange a delivery time. An individual aged 18 or older must be present to sign for the delivery.
• You may return or exchange an unused or unopened item for a refund (excluding shipping and handling charges) within 30 days of purchase. Following 30 days, the item may be returned in exchange for a store credit. Return shipping cost are covered by the customer and some items returned will result in a restocking fee. Please click here to review our returns policy.
• To receive a refund for Live Plants, you must email ecommerce@fitzfishponds.com with the image of the item in the original packaging for review.
• To ensure Live Plants have the best chance to arrive without issue, it is recommended to select next day air or two day shipping options.
• Used chemicals and fish food are not returnable. In addition, all sales on Japanese Koi are final and non-refundable. Should you have any questions or concerns when your fish arrive, please call 908-420-9908.