{"product_id":"fujimac-rii-series-air-pump","title":"FujiMAC RII Series Air Pump","description":"\u003cp\u003eJapanese-made linear diaphragm air pumps, and the quiet workhorse of pond aeration. FujiMAC built these for Japan's Jokasou wastewater market — roughly 40% of an installed base of some 9 million systems — which is a duty cycle no koi pond will ever match. What reaches the pond side is a pump engineered to run continuously for years.\u003c\/p\u003e\n\u003ch3\u003eChoosing a size\u003c\/h3\u003e\n\u003cp\u003eFujiMAC's chart below is a guide, not a rule. Depth matters more than gallons: the deeper the water, the more pressure the pump has to overcome to push air out of the diffuser at the bottom. In practice, for most ponds around 3 feet deep running a single airstone, a \u003cstrong\u003e40R II is usually enough\u003c\/strong\u003e. Deeper ponds need a stronger pump. If you're running several airstones, you don't have to buy one big pump — you can split the load across two or more smaller ones, which also means you're never without air if one goes down. Not sure? Call us at 786-304-2352 with your depth and how many airstones you're running.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePond capacity\u003c\/th\u003e\n\u003cth\u003eMax depth\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e40R II\u003c\/td\u003e\n\u003ctd\u003eup to 1,000 gal\u003c\/td\u003e\n\u003ctd\u003e47\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60R II\u003c\/td\u003e\n\u003ctd\u003eup to 1,500 gal\u003c\/td\u003e\n\u003ctd\u003e61\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80R II\u003c\/td\u003e\n\u003ctd\u003eup to 2,000 gal\u003c\/td\u003e\n\u003ctd\u003e78\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100R II\u003c\/td\u003e\n\u003ctd\u003eup to 2,500 gal\u003c\/td\u003e\n\u003ctd\u003e97\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e120R II\u003c\/td\u003e\n\u003ctd\u003eup to 3,000 gal\u003c\/td\u003e\n\u003ctd\u003e116\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200R II\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eLargest pump FujiMAC sells in North America. Commercial systems, or ganged with other 200R II units. No pond rating published.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eManufacturer figures. Treat them as a starting point — a heavily stocked pond, a long air line, or a fine diffuser all change what the pump actually delivers.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy these instead of a cheaper pump\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo moving parts.\u003c\/strong\u003e A floating rare earth magnet and two synthetic diaphragms — no pistons, no bearings, no oil, nothing else to wear out\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRebuildable in about 15 minutes\u003c\/strong\u003e with two common hand tools, rather than replaced\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuinely quiet\u003c\/strong\u003e — 37 dB on the smaller units, roughly a whisper in a library\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow draw\u003c\/strong\u003e — the 40R II runs on 30 watts, less than a games console, and it runs 24\/7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable output\u003c\/strong\u003e — FujiMAC states performance does not degrade over time, with smooth airflow rather than uneven pulses\u003c\/li\u003e\n\u003cli\u003eResettable circuit breaker built into every model\u003c\/li\u003e\n\u003cli\u003eTwo-year manufacturer's replacement warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eAir flow\u003c\/th\u003e\n\u003cth\u003ePressure\u003c\/th\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003cth\u003eNoise\u003c\/th\u003e\n\u003cth\u003eOutlet\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e40R II\u003c\/td\u003e\n\u003ctd\u003e40 L\/min (1.4 CFM)\u003c\/td\u003e\n\u003ctd\u003e1.7 PSI (12 kPa)\u003c\/td\u003e\n\u003ctd\u003e30 W\u003c\/td\u003e\n\u003ctd\u003e37 dB\u003c\/td\u003e\n\u003ctd\u003e1\/2\" (ext 3\/4\")\u003c\/td\u003e\n\u003ctd\u003e11 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60R II\u003c\/td\u003e\n\u003ctd\u003e60 L\/min (2.1 CFM)\u003c\/td\u003e\n\u003ctd\u003e2.2 PSI (15 kPa)\u003c\/td\u003e\n\u003ctd\u003e37 W\u003c\/td\u003e\n\u003ctd\u003e37 dB\u003c\/td\u003e\n\u003ctd\u003e1\/2\" (ext 3\/4\")\u003c\/td\u003e\n\u003ctd\u003e11 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80R II\u003c\/td\u003e\n\u003ctd\u003e80 L\/min (2.8 CFM)\u003c\/td\u003e\n\u003ctd\u003e2.2 PSI (15 kPa)\u003c\/td\u003e\n\u003ctd\u003e51 W\u003c\/td\u003e\n\u003ctd\u003e39 dB\u003c\/td\u003e\n\u003ctd\u003e1\/2\" (ext 3\/4\")\u003c\/td\u003e\n\u003ctd\u003e11 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100R II\u003c\/td\u003e\n\u003ctd\u003e100 L\/min (3.5 CFM)\u003c\/td\u003e\n\u003ctd\u003e2.6 PSI (18 kPa)\u003c\/td\u003e\n\u003ctd\u003e74 W\u003c\/td\u003e\n\u003ctd\u003e40 dB\u003c\/td\u003e\n\u003ctd\u003e1\/2\" (ext 3\/4\")\u003c\/td\u003e\n\u003ctd\u003e11 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e120R II\u003c\/td\u003e\n\u003ctd\u003e120 L\/min (4.2 CFM)\u003c\/td\u003e\n\u003ctd\u003e2.6 PSI (18 kPa)\u003c\/td\u003e\n\u003ctd\u003e93 W\u003c\/td\u003e\n\u003ctd\u003e41 dB\u003c\/td\u003e\n\u003ctd\u003e3\/4\" (ext 1\")\u003c\/td\u003e\n\u003ctd\u003e11 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200R II\u003c\/td\u003e\n\u003ctd\u003e200 L\/min (7.1 CFM)\u003c\/td\u003e\n\u003ctd\u003e2.9 PSI (20 kPa)\u003c\/td\u003e\n\u003ctd\u003e155 W\u003c\/td\u003e\n\u003ctd\u003e43 dB\u003c\/td\u003e\n\u003ctd\u003e3\/4\" (ext 1\")\u003c\/td\u003e\n\u003ctd\u003e20 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAll models run on 120V \/ 60 Hz. The 40R II through 120R II share one body; the 200R II is the larger, heavier chassis.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eFujiMAC does not publish cabinet dimensions, amperage, diaphragm service life, or an outdoor\/weatherproof rating for any model in this series.\u003c\/em\u003e\u003c\/p\u003e","brand":"FujiMAC","offers":[{"title":"40R II — 40 L\/min","offer_id":59794506350878,"sku":"48500","price":244.99,"currency_code":"USD","in_stock":true},{"title":"60R II — 60 L\/min","offer_id":59794506383646,"sku":"48501","price":272.99,"currency_code":"USD","in_stock":true},{"title":"80R II — 80 L\/min","offer_id":59794506416414,"sku":"48502","price":288.99,"currency_code":"USD","in_stock":true},{"title":"100R II — 100 L\/min","offer_id":59794506449182,"sku":null,"price":353.0,"currency_code":"USD","in_stock":true},{"title":"120R II — 120 L\/min","offer_id":59794506481950,"sku":"48504","price":455.99,"currency_code":"USD","in_stock":true},{"title":"200R II — 200 L\/min","offer_id":59794506514718,"sku":"48506","price":579.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0924\/0189\/3662\/files\/40R.jpg?v=1786924671","url":"https:\/\/houseofkoi.com\/products\/fujimac-rii-series-air-pump","provider":"House of Koi","version":"1.0","type":"link"}