{"product_id":"mountain-tree-lotus-root-bacteria-house-ii-large-8-25-cm-15-piece-box","title":"Mountain Tree Lotus Root Bacteria House II — Large (8 × 25 cm) — 15-Piece Box","description":"\u003cp\u003e\u003cstrong\u003eMountain Tree Lotus Root Bacteria House II — Large \/ XL (8 cm dia × 25 cm)\u003c\/strong\u003e. High-capacity ceramic bio-media for serious koi ponds — a full box of 15 large rods packed with nanopore surface area to power your biological filter.\u003c\/p\u003e\n\u003ch3\u003eWhy it works\u003c\/h3\u003e\n\u003cp\u003eThe signature \u003cstrong\u003elotus-root shape\u003c\/strong\u003e — a large cylinder with seven long channels — dramatically increases water-contact area, while the porous ceramic body contains \u003cstrong\u003enanopores\u003c\/strong\u003e that host beneficial nitrifying bacteria (\u003cem\u003eNitrosomonas\u003c\/em\u003e and \u003cem\u003eNitrobacter\u003c\/em\u003e). Those bacteria convert toxic ammonia and nitrite into far less harmful nitrate — the foundation of clear, stable pond water.\u003c\/p\u003e\n\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e15 pieces\u003c\/strong\u003e per box — total weight 10 kg (heavy-duty bio-load)\u003c\/li\u003e\n\u003cli\u003eEach piece: \u003cstrong\u003e8 cm diameter × 25 cm long\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSignature 7-channel lotus-root cross-section\u003c\/li\u003e\n\u003cli\u003eMountain Tree brand (Article No. MTF218 \/ FM0066) — established Asian bio-media brand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct parameters (per piece)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface area:\u003c\/strong\u003e 5,404 m²\/pc (4,303 m²\/L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpening rate:\u003c\/strong\u003e 70.5%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater absorption:\u003c\/strong\u003e 60–80%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIon data:\u003c\/strong\u003e 300–400 pcs\/cm³  |  \u003cstrong\u003eKH:\u003c\/strong\u003e 3  |  \u003cstrong\u003epH:\u003c\/strong\u003e 7.0–7.2  |  \u003cstrong\u003eTDS:\u003c\/strong\u003e 20–30 ppm  |  \u003cstrong\u003ePO₄:\u003c\/strong\u003e 0 ppm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBest for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge or heavily-stocked koi ponds\u003c\/li\u003e\n\u003cli\u003eBig biological chambers (bead filters, moving-bed, gravity-fed sumps)\u003c\/li\u003e\n\u003cli\u003eShow-quality water clarity where bio-capacity really matters\u003c\/li\u003e\n\u003cli\u003eFully re-loading a biofilter after a shutdown or clean\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cp\u003eRinse gently in dechlorinated pond water before use (never tap water — chlorine kills bacteria). Place in the biological stage after mechanical filtration. Allow 4–6 weeks for full bacterial colonisation. Rinse only if flow drops noticeably — less is more.\u003c\/p\u003e\n\u003ch3\u003eShips across Canada\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Ships within 1–3 business days\u003c\/li\u003e\n\u003cli\u003e✅ Backed by Koi Whisperer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eHeavy item (10 kg box). Shipping calculated at checkout.\u003c\/em\u003e\u003c\/p\u003e","brand":"Koi Whisperer","offers":[{"title":"Default Title","offer_id":54494839505171,"sku":"FILT-BH-L-8x25-MTF218","price":300.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/9352\/8339\/files\/IMG_1728_8d58f172-26c4-4cbc-9c92-ae85273f4a67.jpg?v=1785032621","url":"https:\/\/koiwhisperer.ca\/products\/mountain-tree-lotus-root-bacteria-house-ii-large-8-25-cm-15-piece-box","provider":"Koi Whisperer","version":"1.0","type":"link"}