{"product_id":"spider-farmer-sf4000-450w-full-spectrum-dimmable-led-grow-light","title":"Spider Farmer SF4000 450W Full Spectrum Dimmable LED Grow Light","description":"\u003cp data-start=\"99\" data-end=\"362\" class=\"PDq2pG_selectionAnchorContainer\"\u003eThe Spider Farmer SF4000 450W Full Spectrum LED Grow Light is a high-output board-style fixture designed for 4' × 4' grow tents, open grow rooms, and indoor gardens requiring dependable seed-to-harvest lighting with adjustable intensity and broad canopy coverage.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"364\" data-end=\"702\"\u003eUpdated for 2026, the SF4000 now features premium Bridgelux high-efficiency LEDs. The increased diode count and optimized layout maintain the strong output, uniformity, and dependable performance associated with the SF Series while allowing each diode to operate under less stress for improved thermal stability and long-term reliability.\u003c\/p\u003e\n\u003cp data-start=\"704\" data-end=\"944\"\u003eDrawing 450 watts, the SF4000 delivers a rated photosynthetic photon efficacy of 2.7 µmol\/J. This efficient performance provides the intensity required for a 4' × 4' flowering footprint while supporting vegetative coverage of up to 5' × 5'.\u003c\/p\u003e\n\u003cp data-start=\"946\" data-end=\"1269\"\u003eIts large board-style design distributes light across a broad canopy, helping reduce concentrated hotspots while improving exposure around the outer edges of the growing area. The optimized diode arrangement also supports deeper canopy penetration for more consistent development from the top of the plants to lower growth.\u003c\/p\u003e\n\u003cp data-start=\"1271\" data-end=\"1546\"\u003eThe complete full spectrum combines 3000K warm white, 5000K cool white, 660nm deep red, and 760nm infrared wavelengths. Together, these wavelengths support seedlings, vegetative development, flowering, and fruiting without requiring growers to change fixtures between stages.\u003c\/p\u003e\n\u003cp data-start=\"1548\" data-end=\"1796\"\u003eAn integrated dimming knob allows the output to be adjusted as plants mature. Lower intensity can be used during propagation and early vegetative growth, while output can be increased gradually as plants develop larger canopies and enter flowering.\u003c\/p\u003e\n\u003cp data-start=\"1798\" data-end=\"2012\"\u003eCompatible SF4000 fixtures can also be connected for unified dimming. This allows growers operating larger rooms or multiple fixtures to adjust intensity simultaneously instead of changing each light independently.\u003c\/p\u003e\n\u003cp data-start=\"2014\" data-end=\"2249\"\u003eThe SF4000 uses a thick aluminum heat sink and fanless passive-cooling design to manage heat without internal fans. This allows silent operation while reducing maintenance requirements and eliminating a common mechanical failure point.\u003c\/p\u003e\n\u003cp data-start=\"2251\" data-end=\"2519\"\u003eFor growers seeking more advanced automation, the SF4000 can be paired with the optional Spider Farmer GGS Controller. Compatible controller functions can include remote adjustment, programmed lighting schedules, sunrise and sunset simulation, and overheat protection.\u003c\/p\u003e\n\u003cp data-start=\"2521\" data-end=\"2811\"\u003eDesigned for 4' × 4' grow tents and recommended for use with a 6-inch ventilation system, the SF4000 combines high-output full-spectrum lighting, straightforward dimming, quiet cooling, and flexible smart-control compatibility in a fixture backed by Spider Farmer’s 5-year limited warranty.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1t83ykx\" data-start=\"2813\" data-end=\"2847\"\u003ePremium Bridgelux LED Platform\u003c\/h3\u003e\n\u003cp data-start=\"2849\" data-end=\"2950\"\u003eThe 2026 SF4000 uses high-efficiency Bridgelux LEDs arranged across an optimized, high-density board.\u003c\/p\u003e\n\u003cp data-start=\"2952\" data-end=\"3122\"\u003eThe increased diode count allows each LED to operate under a lower individual load, supporting improved thermal stability, dependable output, and extended operating life.\u003c\/p\u003e\n\u003ch3 data-section-id=\"10qleht\" data-start=\"3124\" data-end=\"3154\"\u003eEfficient 450W Performance\u003c\/h3\u003e\n\u003cp data-start=\"3156\" data-end=\"3234\"\u003eDrawing 450 watts, the SF4000 achieves a rated fixture efficacy of 2.7 µmol\/J.\u003c\/p\u003e\n\u003cp data-start=\"3236\" data-end=\"3370\"\u003eThis combination provides strong full-cycle intensity for 4' × 4' flowering spaces while maintaining efficient electrical performance.\u003c\/p\u003e\n\u003ch3 data-section-id=\"116xtzp\" data-start=\"3372\" data-end=\"3411\"\u003eFull Spectrum with Red and Infrared\u003c\/h3\u003e\n\u003cp data-start=\"3413\" data-end=\"3518\"\u003eThe spectrum combines 3000K warm white, 5000K cool white, 660nm deep red, and 760nm infrared wavelengths.\u003c\/p\u003e\n\u003cp data-start=\"3520\" data-end=\"3641\"\u003eThis balanced output supports seedlings, vegetative growth, flowering, and fruiting through the complete plant lifecycle.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1a67j9c\" data-start=\"3643\" data-end=\"3679\"\u003eBroad 4' × 4' Flowering Coverage\u003c\/h3\u003e\n\u003cp data-start=\"3681\" data-end=\"3757\"\u003eThe large board-style fixture distributes light across a broad growing area.\u003c\/p\u003e\n\u003cp data-start=\"3759\" data-end=\"3887\"\u003eIts optimized diode layout helps maintain stronger exposure across the center, edges, and corners of a 4' × 4' flowering canopy.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1vsfkrf\" data-start=\"3889\" data-end=\"3919\"\u003eAdjustable Dimming Control\u003c\/h3\u003e\n\u003cp data-start=\"3921\" data-end=\"4031\"\u003eThe integrated dimming knob allows growers to tailor light intensity to different stages of plant development.\u003c\/p\u003e\n\u003cp data-start=\"4033\" data-end=\"4162\"\u003eOutput can be kept lower for seedlings and young plants before being increased gradually through vegetative growth and flowering.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1ixtwml\" data-start=\"4164\" data-end=\"4195\"\u003eUnified Multi-Light Dimming\u003c\/h3\u003e\n\u003cp data-start=\"4197\" data-end=\"4276\"\u003eCompatible SF4000 fixtures can be linked for synchronized intensity adjustment.\u003c\/p\u003e\n\u003cp data-start=\"4278\" data-end=\"4378\"\u003eThis simplifies lighting management in larger spaces where multiple fixtures are operating together.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1acptyv\" data-start=\"4380\" data-end=\"4411\"\u003eImproved Canopy Penetration\u003c\/h3\u003e\n\u003cp data-start=\"4413\" data-end=\"4544\"\u003eThe optimized diode density produces strong, even light across the growing area while helping photons reach deeper into the canopy.\u003c\/p\u003e\n\u003cp data-start=\"4546\" data-end=\"4669\"\u003eThis supports more consistent development between upper growth, lower branches, and plants positioned near the outer edges.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1lqtrcb\" data-start=\"4671\" data-end=\"4697\"\u003eSilent Passive Cooling\u003c\/h3\u003e\n\u003cp data-start=\"4699\" data-end=\"4774\"\u003eA thick aluminum heat sink dissipates heat naturally without internal fans.\u003c\/p\u003e\n\u003cp data-start=\"4776\" data-end=\"4904\"\u003eThe fanless construction allows quiet operation while reducing maintenance requirements and potential mechanical failure points.\u003c\/p\u003e\n\u003ch3 data-section-id=\"w7y92d\" data-start=\"4906\" data-end=\"4936\"\u003eOptional GGS Smart Control\u003c\/h3\u003e\n\u003cp data-start=\"4938\" data-end=\"5048\"\u003eThe SF4000 can be paired with a compatible Spider Farmer GGS Controller for more advanced lighting management.\u003c\/p\u003e\n\u003cp data-start=\"5050\" data-end=\"5201\"\u003eDepending on the selected controller setup, growers can add remote control, schedules, sunrise and sunset simulation, and temperature-based protection.\u003c\/p\u003e\n\u003ch3 data-section-id=\"w3a6bn\" data-start=\"5203\" data-end=\"5221\"\u003eWhat's Included\u003c\/h3\u003e\n\u003cul data-start=\"5223\" data-end=\"5361\"\u003e\n\u003cli data-section-id=\"yfgcj5\" data-start=\"5223\" data-end=\"5260\"\u003eSpider Farmer SF4000 LED Grow Light\u003c\/li\u003e\n\u003cli data-section-id=\"shf7sw\" data-start=\"5261\" data-end=\"5295\"\u003eTwo Stainless Steel Hanger Hooks\u003c\/li\u003e\n\u003cli data-section-id=\"1efh67z\" data-start=\"5296\" data-end=\"5325\"\u003eTwo Adjustable Rope Hangers\u003c\/li\u003e\n\u003cli data-section-id=\"crmp5i\" data-start=\"5326\" data-end=\"5347\"\u003eStandard Power Cord\u003c\/li\u003e\n\u003cli data-section-id=\"10sdtyb\" data-start=\"5348\" data-end=\"5361\"\u003eUser Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"5382\" data-end=\"6520\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"5382\" data-end=\"5413\"\u003e\n\u003ctr data-start=\"5382\" data-end=\"5413\"\u003e\n\u003cth data-start=\"5382\" data-end=\"5402\" data-col-size=\"sm\" class=\"last:pe-10\"\u003e\u003cstrong data-start=\"5384\" data-end=\"5401\"\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth data-start=\"5402\" data-end=\"5413\" data-col-size=\"md\" class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"5424\" data-end=\"6520\"\u003e\n\u003ctr data-start=\"5424\" data-end=\"5453\"\u003e\n\u003ctd data-start=\"5424\" data-end=\"5436\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5426\" data-end=\"5435\"\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5436\" data-end=\"5453\" data-col-size=\"md\"\u003eSpider Farmer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5454\" data-end=\"5493\"\u003e\n\u003ctd data-start=\"5454\" data-end=\"5468\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5456\" data-end=\"5467\"\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5468\" data-end=\"5493\" data-col-size=\"md\"\u003eSF4000 LED Grow Light\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5494\" data-end=\"5516\"\u003e\n\u003ctd data-start=\"5494\" data-end=\"5506\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5496\" data-end=\"5505\"\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5506\" data-end=\"5516\" data-col-size=\"md\"\u003eSF4000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5517\" data-end=\"5580\"\u003e\n\u003ctd data-start=\"5517\" data-end=\"5536\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5519\" data-end=\"5535\"\u003eFixture Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5536\" data-end=\"5580\" data-col-size=\"md\"\u003eFull Spectrum Board-Style LED Grow Light\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5581\" data-end=\"5634\"\u003e\n\u003ctd data-start=\"5581\" data-end=\"5600\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5583\" data-end=\"5599\"\u003eLED Platform\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5600\" data-end=\"5634\" data-col-size=\"md\"\u003eBridgelux High-Efficiency LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5635\" data-end=\"5686\"\u003e\n\u003ctd data-start=\"5635\" data-end=\"5650\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5637\" data-end=\"5649\"\u003eSpectrum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5650\" data-end=\"5686\" data-col-size=\"md\"\u003e3000K, 5000K, 660nm and 760nm IR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5687\" data-end=\"5719\"\u003e\n\u003ctd data-start=\"5687\" data-end=\"5711\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5689\" data-end=\"5710\"\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5711\" data-end=\"5719\" data-col-size=\"md\"\u003e450W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5720\" data-end=\"5759\"\u003e\n\u003ctd data-start=\"5720\" data-end=\"5745\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5722\" data-end=\"5744\"\u003eFixture Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5745\" data-end=\"5759\" data-col-size=\"md\"\u003e2.7 µmol\/J\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5760\" data-end=\"5803\"\u003e\n\u003ctd data-start=\"5760\" data-end=\"5786\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5762\" data-end=\"5785\"\u003eVegetative Coverage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5786\" data-end=\"5803\" data-col-size=\"md\"\u003eUp to 5' × 5'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5804\" data-end=\"5840\"\u003e\n\u003ctd data-start=\"5804\" data-end=\"5829\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5806\" data-end=\"5828\"\u003eFlowering Coverage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5829\" data-end=\"5840\" data-col-size=\"md\"\u003e4' × 4'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5841\" data-end=\"5882\"\u003e\n\u003ctd data-start=\"5841\" data-end=\"5871\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5843\" data-end=\"5870\"\u003eGrow Tent Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5871\" data-end=\"5882\" data-col-size=\"md\"\u003e4' × 4'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5883\" data-end=\"5920\"\u003e\n\u003ctd data-start=\"5883\" data-end=\"5910\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5885\" data-end=\"5909\"\u003eRecommended Fan Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5910\" data-end=\"5920\" data-col-size=\"md\"\u003e6-Inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5921\" data-end=\"5962\"\u003e\n\u003ctd data-start=\"5921\" data-end=\"5935\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5923\" data-end=\"5934\"\u003eDimming\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5935\" data-end=\"5962\" data-col-size=\"md\"\u003eIntegrated Dimming Knob\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"5963\" data-end=\"6019\"\u003e\n\u003ctd data-start=\"5963\" data-end=\"5989\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"5965\" data-end=\"5988\"\u003eMulti-Light Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"5989\" data-end=\"6019\" data-col-size=\"md\"\u003eUnified Dimming Compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"6020\" data-end=\"6092\"\u003e\n\u003ctd data-start=\"6020\" data-end=\"6049\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"6022\" data-end=\"6048\"\u003eOptional Smart Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"6049\" data-end=\"6092\" data-col-size=\"md\"\u003eSpider Farmer GGS Controller Compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"6093\" data-end=\"6216\"\u003e\n\u003ctd data-start=\"6093\" data-end=\"6131\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"6095\" data-end=\"6130\"\u003eSmart Functions with Controller\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"6131\" data-end=\"6216\" data-col-size=\"md\"\u003eRemote Control, Scheduling, Sunrise and Sunset Simulation and Overheat Protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"6217\" data-end=\"6276\"\u003e\n\u003ctd data-start=\"6217\" data-end=\"6238\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"6219\" data-end=\"6237\"\u003eCooling System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"6238\" data-end=\"6276\" data-col-size=\"md\"\u003ePassive Fanless Aluminum Heat Sink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"6277\" data-end=\"6303\"\u003e\n\u003ctd data-start=\"6277\" data-end=\"6295\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"6279\" data-end=\"6294\"\u003eNoise Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"6295\" data-end=\"6303\" data-col-size=\"md\"\u003e0 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"6304\" data-end=\"6386\"\u003e\n\u003ctd data-start=\"6304\" data-end=\"6335\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"6306\" data-end=\"6334\"\u003eRecommended Applications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"6335\" data-end=\"6386\" data-col-size=\"md\"\u003eGrow Tents, Grow Rooms and Large Indoor Gardens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"6387\" data-end=\"6445\"\u003e\n\u003ctd data-start=\"6387\" data-end=\"6407\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"6389\" data-end=\"6406\"\u003eGrowth Stages\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"6407\" data-end=\"6445\" data-col-size=\"md\"\u003eSeedling, Vegetative and Flowering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"6446\" data-end=\"6488\"\u003e\n\u003ctd data-start=\"6446\" data-end=\"6461\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"6448\" data-end=\"6460\"\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"6461\" data-end=\"6488\" data-col-size=\"md\"\u003e5-Year Limited Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"6489\" data-end=\"6520\"\u003e\n\u003ctd data-start=\"6489\" data-end=\"6509\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"6491\" data-end=\"6508\"\u003eReturn Period\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"6509\" data-end=\"6520\" data-col-size=\"md\"\u003e30 Days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Spider Farmer","offers":[{"title":"Default Title","offer_id":49711450128634,"sku":"SF.4000","price":259.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/7487\/9482\/files\/Spider-Farmer-New-SF4000-2512-LED-Grow-Light.jpg?v=1784246527","url":"https:\/\/cultivasupply.com\/products\/spider-farmer-sf4000-450w-full-spectrum-dimmable-led-grow-light","provider":"Cultiva Supply","version":"1.0","type":"link"}