{"product_id":"spider-farmer-se4500-led-grow-light","title":"Spider Farmer SE4500 LED Grow Light – 320W Full Spectrum","description":"\u003ch2\u003e320W of Even, Dimmable Light for a 70 x 140 cm Tent\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eSpider Farmer SE4500 LED Grow Light\u003c\/strong\u003e is a \u003cstrong\u003e320W\u003c\/strong\u003e three-bar fixture built for a \u003cstrong\u003e70 x 140 cm\u003c\/strong\u003e grow tent, stretching to \u003cstrong\u003e90 x 150 cm\u003c\/strong\u003e at a push. It puts out \u003cstrong\u003e913 µmol\/s\u003c\/strong\u003e at an efficiency of \u003cstrong\u003e2.85 µmol\/J\u003c\/strong\u003e, so it draws far less power and gives off less heat than an HPS lamp of similar output. A \u003cstrong\u003efull-spectrum\u003c\/strong\u003e mix of warm white, cool white and \u003cstrong\u003e660 nm deep red\u003c\/strong\u003e diodes covers every stage from seedling to flowering and fruiting, and a digital dimmer box takes it from \u003cstrong\u003e0 to 100%\u003c\/strong\u003e by hand or from the Spider Farmer app.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh efficiency\u003c\/strong\u003e - \u003cstrong\u003e2.85 µmol\/J\u003c\/strong\u003e means more usable light per pound spent on electricity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEven canopy coverage\u003c\/strong\u003e - three wide bars spread light to the edges of a \u003cstrong\u003e70 x 140 cm\u003c\/strong\u003e footprint, cutting hot spots and shaded corners\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRuns cool and silent\u003c\/strong\u003e - aluminium bars shed heat passively, with no fan to fail or hum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise dimming\u003c\/strong\u003e - \u003cstrong\u003e0-100%\u003c\/strong\u003e digital dimmer with manual, linked and auto modes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApp control\u003c\/strong\u003e - Bluetooth and WiFi scheduling, sunrise and sunset ramps, and a temperature cut-back that dims or switches off the light if the tent overheats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaisy-chain dimming\u003c\/strong\u003e - link up to \u003cstrong\u003e50\u003c\/strong\u003e fixtures over RJ12 and dim them together\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Do Plants Stretch Under a Weak or Patchy Light?\u003c\/h3\u003e\u003cp\u003eWhen light is too weak, or bright in the middle and dim at the edges, plants stretch towards it, put on thin, weak stems and grow unevenly across the tent. The SE4500 spreads its output across three bars instead of a single hot centre, giving the whole canopy the intensity it needs for compact \u003cstrong\u003evegetative growth\u003c\/strong\u003e and strong \u003cstrong\u003eflowering\u003c\/strong\u003e, while its low heat keeps \u003cstrong\u003etemperature and humidity\u003c\/strong\u003e easier to manage than with HPS.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHang it\u003c\/strong\u003e with the supplied rope-ratchet hangers above the centre of the tent and connect the power lead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeedlings and cuttings\u003c\/strong\u003e - aim for \u003cstrong\u003e100-300 µmol\/m²\/s\u003c\/strong\u003e: hang high and dim to suit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVegetative growth\u003c\/strong\u003e - \u003cstrong\u003e400-600 µmol\/m²\/s\u003c\/strong\u003e, raising the dimmer as plants fill out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlowering and fruiting\u003c\/strong\u003e - \u003cstrong\u003e800-1,000 µmol\/m²\/s\u003c\/strong\u003e across the canopy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet a schedule\u003c\/strong\u003e in the app, or plug it into a timer, and add a sunrise and sunset ramp to ease plants in and out of the light period.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower draw:\u003c\/strong\u003e 320W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPF:\u003c\/strong\u003e 913 µmol\/s\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficacy:\u003c\/strong\u003e 2.85 µmol\/J\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixture size:\u003c\/strong\u003e 115.3 x 36.9 x 7.7 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Spider Farmer SE4500 (SE-4500)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpectrum:\u003c\/strong\u003e full spectrum: warm white 2800-3000K, cool white 4800-5000K and 660 nm deep red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoverage:\u003c\/strong\u003e core 70 x 140 cm (2 x 4 ft); maximum 90 x 150 cm (3 x 5 ft)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight intensity (maker test, 100%, 120 x 60 cm tent):\u003c\/strong\u003e about 1,450 µmol\/m²\/s at the centre at 20 cm and 1,170 at 30 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.64 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput voltage:\u003c\/strong\u003e AC 100-277V, 50-60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated lifespan:\u003c\/strong\u003e 100,000 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e 3 aluminium LED bars, passively cooled, no fan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimming:\u003c\/strong\u003e 0-100% digital dimmer; manual, linked and auto modes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl:\u003c\/strong\u003e Spider Farmer app over Bluetooth and WiFi: schedules, sunrise\/sunset, temperature dim or off; PPFD mode with a Spider Farmer SensorPro sensor (sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaisy chain:\u003c\/strong\u003e up to 50 lights via RJ12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuggested tent and fan:\u003c\/strong\u003e 70 x 140 cm tent with a 4 in inline fan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e SE4500 light, UK power lead, RJ12 cable, four rope-ratchet hangers, user manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cdiv class=\"hcs-faq\"\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWhat size tent is the SE4500 for?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eIt is designed for a 70 x 140 cm (2 x 4 ft) tent and can stretch to 90 x 150 cm. Spider Farmer pairs it with a 4 in inline fan for extraction.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eHow high should I hang it?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eHang by intensity rather than a fixed height: about 100-300 µmol\/m²\/s for seedlings, 400-600 for vegetative growth and 800-1,000 for flowering. At full power Spider Farmer measured about 1,170 µmol\/m²\/s at the centre 30 cm below the light, so hang higher or dim it for young plants.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eDo I need the app to use it?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNo. The dimmer box works on its own, and the light runs from a normal timer. The app adds scheduling, sunrise and sunset ramps and a temperature cut-back; its PPFD mode needs a Spider Farmer SensorPro sensor, sold separately.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eCan I run more than one together?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eYes. Up to 50 fixtures can be linked with RJ12 cables and dimmed together, which keeps a larger room or a pair of tents on the same light level.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003ch3\u003eWorks Well With\u003c\/h3\u003e\u003cdiv class=\"hcs-related\" style=\"display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 0;\"\u003e\u003ca href=\"\/products\/spider-farmer-ggs-ac5-power-strip-kit\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/spider-farmer-ggs-ac5-power-strip-kit-1.jpg?v=1790169883\u0026amp;width=160\" alt=\"Spider Farmer GGS AC5 Power Strip Kit\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eSpider Farmer GGS AC5 Power Strip Kit\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eSchedules the light with your fan and heater in the same Spider Farmer app\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/div\u003e","brand":"Spider Farmer","offers":[{"title":"Default Title","offer_id":53931149689098,"sku":"LGT-SPID-002-01","price":225.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/spider-farmer-se4500-led-grow-light-default-title-1.jpg?v=1792302662","url":"https:\/\/hydrocropshop.co.uk\/products\/spider-farmer-se4500-led-grow-light","provider":"Hydro Crop Shop","version":"1.0","type":"link"}