{"product_id":"nishikigoirdf-rotary-drum-filter","title":"NishikigoiRDF Rotary Drum Filter","description":"\u003cp\u003eThe \u003cstrong\u003eNishikigoiRDF Rotary Drum Filter\u003c\/strong\u003e is a self-cleaning mechanical pre-filter that strains solid waste out of your pond water down to \u003cstrong\u003e75 microns\u003c\/strong\u003e before it ever reaches your bio-filter. A fine 316 stainless screen wraps a slowly rotating drum; clean water passes through while leaves, string algae, and fish waste stay on the surface. When solids build up, a float switch triggers a spray bar that rinses the screen and flushes the debris to waste automatically. Choose \u003cstrong\u003ePolypropylene\u003c\/strong\u003e for a heavy-duty homeowner and light-commercial build, or \u003cstrong\u003e316 Stainless Steel\u003c\/strong\u003e for full commercial-grade construction. Both share the same drum, screen, and internals, the housing material is the only difference.\u003c\/p\u003e\n\u003cp\u003eRemoving solids first is the single biggest upgrade you can make to a koi pond. Once the heavy waste is gone, a downstream bead or bio-filter like the \u003ca href=\"https:\/\/playitkoi.com\/products\/alphaone-filters\" title=\"AlphaONE Filters\"\u003eAlphaONE\u003c\/a\u003e or \u003ca href=\"https:\/\/playitkoi.com\/products\/alphanano-filters\" title=\"AlphaNANO Filters\"\u003eAlphaNANO\u003c\/a\u003e stops clogging and can spend its media on dissolved wastes (ammonia and nitrite) instead of trapped sludge. The result is clearer water, healthier fish, and far less hand-cleaning.\u003c\/p\u003e\n\u003cdiv style=\"background-color: #FFF9E1; border-left: 4px solid #FFE219; padding: 14px 18px; margin: 20px 0; font-size: 15px; line-height: 1.5;\"\u003e\n\u003cstrong\u003eFreight Shipping Notice:\u003c\/strong\u003e NishikigoiRDF drum filters ship by freight only. Fulfillment timing varies with current build volume, and the trucking company will call to schedule a delivery appointment, so someone needs to be present to receive it. The larger sizes are special-order items.\u003c\/div\u003e\n\u003ch2 style=\"color: #0B63A7; margin-top: 32px;\"\u003eHow the Drum Filter Works\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGravity-fed intake.\u003c\/strong\u003e The drum sits between your pond and your pump. Water enters the housing by gravity and passes through the screen from the inside out, so the filter always runs gravity-in, never pump-fed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e75-micron screen.\u003c\/strong\u003e The rotating drum is wrapped in a precision 316 stainless mesh that captures solids most filters let through.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic backwash.\u003c\/strong\u003e A float switch senses when the screen loads up, spins the drum, and fires a spray bar that rinses trapped solids into the waste line, no hands in the water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtects everything downstream.\u003c\/strong\u003e With solids removed first, your pump, UV, and pressurized filters all run cleaner and longer between services.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #0B63A7; margin-top: 32px;\"\u003eChoose Your Size\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 20px 0;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px; line-height: 1.4;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #0B63A7; color: #FFFFFF;\"\u003e\n\u003cth style=\"padding: 12px 14px; border: 1px solid #0B63A7; text-align: center; font-weight: 600; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 12px 14px; border: 1px solid #0B63A7; text-align: center; font-weight: 600; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003eMax Flow\u003c\/th\u003e\n\u003cth style=\"padding: 12px 14px; border: 1px solid #0B63A7; text-align: center; font-weight: 600; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003ePond Size Up To\u003c\/th\u003e\n\u003cth style=\"padding: 12px 14px; border: 1px solid #0B63A7; text-align: center; font-weight: 600; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003eInlets \u0026amp; Outlets\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center; background-color: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal; font-weight: 600;\"\u003eNGRDF5\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e1,250 GPH\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e2,500 gallons\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003eContact us\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center; background-color: #F3F5F6;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal; font-weight: 600;\"\u003eNGRDF10\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e2,650 GPH\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e5,500 gallons\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e2 × 2\" in \u0026amp; out · 2.5\" waste\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center; background-color: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal; font-weight: 600;\"\u003eNGRDF20\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e5,300 GPH\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e10,500 gallons\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e2 × 2.5\" in \u0026amp; out · 2\" waste\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center; background-color: #F3F5F6;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal; font-weight: 600;\"\u003eNGRDF30\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e7,900 GPH\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e16,500 gallons\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e2 × 4\" in \u0026amp; out · 2.5\" waste\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center; background-color: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal; font-weight: 600;\"\u003eNGRDF60\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e16,000 GPH\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e32,000 gallons\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e3 × 4\" in \u0026amp; out · 2.5\" waste\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center; background-color: #F3F5F6;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal; font-weight: 600;\"\u003eNGRDF80\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e21,200 GPH\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e42,000 gallons\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e4 × 4\" in \u0026amp; out · 3\" waste\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center; background-color: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal; font-weight: 600;\"\u003eNGRDF100\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e26,500 GPH\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e55,000 gallons (special order)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003eContact us\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center; background-color: #F3F5F6;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal; font-weight: 600;\"\u003eNGRDF125\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e33,000 GPH\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e65,000 gallons (special order)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003eContact us\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center; background-color: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal; font-weight: 600;\"\u003eNGRDF150\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e40,000 GPH\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e80,000 gallons (special order)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003eContact us\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center; background-color: #F3F5F6;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal; font-weight: 600;\"\u003eNGRDF200\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e53,000 GPH\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003e100,000 gallons (special order)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #E1E3E4; white-space: normal; word-break: normal; overflow-wrap: normal;\"\u003eContact us\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #0B63A7; margin-top: 32px;\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRemoves solids down to 75 microns, far finer than a sieve or brush pre-filter\u003c\/li\u003e\n\u003cli\u003eSelf-cleaning: a float-switch-triggered spray bar backwashes the screen automatically\u003c\/li\u003e\n\u003cli\u003eChoose heavy-duty Polypropylene or full commercial-grade 316 Stainless Steel, same internals either way\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGravity-fed by design:\u003c\/strong\u003e the drum runs gravity-in, ahead of your pump, then feeds a pressurized AlphaONE or AlphaNANO. It is not a pump-fed pre-filter.\u003c\/li\u003e\n\u003cli\u003eGreatly reduces maintenance on your pressurized filters and frees them to work primarily as biological filtration\u003c\/li\u003e\n\u003cli\u003eTen sizes for ponds from 2,500 to 100,000 gallons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #0B63A7; margin-top: 32px;\"\u003eHow It Compares\u003c\/h2\u003e\n\u003cp\u003eA rotary drum filter is the most thorough mechanical pre-filtration you can add to a koi pond. Where a settling chamber or brush box only slows the water so heavier solids drop out, the NishikigoiRDF actively sieves every gallon to 75 microns and cleans itself. Because the solids never reach them, your pressurized bead filters need far less backwashing and can act primarily as the biological stage of your system. For a compact pressurized pre-filter on smaller builds, the \u003ca href=\"https:\/\/playitkoi.com\/products\/aquasieve-ss-stainless-steel-prefilter\" title=\"AquaSieve SS Prefilter\"\u003eAquaSieve SS\u003c\/a\u003e is a simpler option.\u003c\/p\u003e\n\u003ch2 style=\"color: #0B63A7; margin-top: 32px;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does a rotary drum filter actually do?\u003c\/strong\u003e\u003cbr\u003eIt mechanically strains solid waste, fish waste, leaves, and string algae, out of the water down to 75 microns before that debris can clog your bio-filter or foul your UV. It is the first stage in a clean, low-maintenance pond system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does it clean itself?\u003c\/strong\u003e\u003cbr\u003eA float switch monitors the water level inside the drum. As the screen loads with solids the level rises, which triggers the drum to rotate while a spray bar rinses the captured debris off the screen and out to a waste line. No hands in the water and no filter pads to scrub.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I pump water into it?\u003c\/strong\u003e\u003cbr\u003eNo. The NishikigoiRDF is a gravity-fed filter. Water flows into the drum by gravity, is screened, and then goes to your pump and on to your pressurized filters. It should never be pump-fed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePolypropylene or Stainless Steel?\u003c\/strong\u003e\u003cbr\u003eThe internals are identical, only the housing differs. Polypropylene is the heavy-duty choice for home and light-commercial ponds; 316 Stainless Steel steps up to full commercial-grade construction for the most demanding installations. Pick your material from the Material option above.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich size do I need?\u003c\/strong\u003e\u003cbr\u003eMatch the model's pond-size rating to your pond and make sure your pump flow does not exceed the model's maximum flow. The table above lists both figures for every size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I still need a bio-filter?\u003c\/strong\u003e\u003cbr\u003eYes. The drum filter handles mechanical filtration (solids). You still need biological filtration for dissolved wastes, and the RDF makes that bio-filter far more effective by keeping solids out of it. It pairs naturally with an AlphaONE or AlphaNANO bead filter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does it ship?\u003c\/strong\u003e\u003cbr\u003eBy freight only. The carrier calls to schedule an appointment, and someone needs to be present to receive it. Larger sizes are special-order.\u003c\/p\u003e\n\u003ch2 style=\"color: #0B63A7; margin-top: 32px;\"\u003eExplore More\u003c\/h2\u003e\n\u003cp\u003eShop the full range: \u003ca href=\"https:\/\/playitkoi.com\/collections\/pond-filtration\"\u003ePond Filtration Supplies\u003c\/a\u003e, \u003ca href=\"https:\/\/playitkoi.com\/collections\/pressurized-filters\"\u003ePressurized Bead Filters\u003c\/a\u003e, and \u003ca href=\"https:\/\/playitkoi.com\/collections\/pond-pumps\"\u003ePond Pumps\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eBuilding a complete system or not sure which drum filter fits your build? Write Support@playitkoi.com for a hand-sized recommendation and a freight quote.\u003c\/p\u003e\n","brand":"GCTek","offers":[{"title":"NGRDF5 - 2,500 gal Pond (1,250 GPH) \/ Polypropylene","offer_id":45926493028422,"sku":"NGRDF5PP","price":995.0,"currency_code":"USD","in_stock":true},{"title":"NGRDF10 - 5,500 gal Pond (2,650 GPH) \/ Polypropylene","offer_id":45926493061190,"sku":"NGRDF10PP","price":1349.95,"currency_code":"USD","in_stock":true},{"title":"NGRDF10 - 5,500 gal Pond (2,650 GPH) \/ Stainless Steel","offer_id":45926493093958,"sku":"NGRDF10SS","price":2974.95,"currency_code":"USD","in_stock":true},{"title":"NGRDF20 - 10,500 gal Pond (5,300 GPH) \/ Polypropylene","offer_id":45926493126726,"sku":"NGRDF20PP","price":2269.95,"currency_code":"USD","in_stock":true},{"title":"NGRDF20 - 10,500 gal Pond (5,300 GPH) \/ Stainless Steel","offer_id":45926493159494,"sku":"NGRDF20SS","price":3119.95,"currency_code":"USD","in_stock":true},{"title":"NGRDF30 - 16,500 gal Pond (7,900 GPH) \/ Polypropylene","offer_id":45926493192262,"sku":"NGRDF30PP","price":2995.0,"currency_code":"USD","in_stock":true},{"title":"NGRDF30 - 16,500 gal Pond (7,900 GPH) \/ Stainless Steel","offer_id":45926493225030,"sku":"NGRDF30SS","price":5295.0,"currency_code":"USD","in_stock":true},{"title":"NGRDF60 - 32,000 gal Pond (16,000 GPH) \/ Polypropylene","offer_id":45926493257798,"sku":"NGRDF60PP","price":4575.0,"currency_code":"USD","in_stock":true},{"title":"NGRDF60 - 32,000 gal Pond (16,000 GPH) \/ Stainless Steel","offer_id":45926493290566,"sku":"NGRDF60SS","price":7495.0,"currency_code":"USD","in_stock":true},{"title":"NGRDF80 - 42,000 gal Pond (21,200 GPH) \/ Polypropylene","offer_id":45926493323334,"sku":"NGRDF80PP","price":5899.0,"currency_code":"USD","in_stock":true},{"title":"NGRDF80 - 42,000 gal Pond (21,200 GPH) \/ Stainless Steel","offer_id":45926493356102,"sku":"NGRDF80SS","price":9795.0,"currency_code":"USD","in_stock":true},{"title":"NGRDF100 - 55,000 gal Pond (26,500 GPH) - Special Order \/ Polypropylene","offer_id":45926493388870,"sku":"NGRDF100PP","price":7739.95,"currency_code":"USD","in_stock":true},{"title":"NGRDF100 - 55,000 gal Pond (26,500 GPH) - Special Order \/ Stainless Steel","offer_id":45926493421638,"sku":"NGRDF100SS","price":10995.0,"currency_code":"USD","in_stock":true},{"title":"NGRDF125 - 65,000 gal Pond (33,000 GPH) - Special Order \/ Polypropylene","offer_id":45926493454406,"sku":"NGRDF125PP","price":8199.95,"currency_code":"USD","in_stock":true},{"title":"NGRDF150 - 80,000 gal Pond (40,000 GPH) - Special Order \/ Polypropylene","offer_id":45926493487174,"sku":"NGRDF150PP","price":10419.95,"currency_code":"USD","in_stock":true},{"title":"NGRDF150 - 80,000 gal Pond (40,000 GPH) - Special Order \/ Stainless Steel","offer_id":45926493519942,"sku":"NGRDF150SS","price":14680.0,"currency_code":"USD","in_stock":true},{"title":"NGRDF200 - 100,000 gal Pond (53,000 GPH) - Special Order \/ Polypropylene","offer_id":45926493552710,"sku":"NGRDF200PP","price":12369.95,"currency_code":"USD","in_stock":true},{"title":"NGRDF200 - 100,000 gal Pond (53,000 GPH) - Special Order \/ Stainless Steel","offer_id":45926493585478,"sku":"NGRDF200SS","price":18600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1287\/3545\/files\/nishikigoirdf-30wshad_1783375853_aafdc0a2-bb72-459f-87dc-24e5b201dac5.jpg?v=1784846544","url":"https:\/\/playitkoi.com\/es\/products\/nishikigoirdf-rotary-drum-filter","provider":"Play It Koi","version":"1.0","type":"link"}