{"product_id":"lumii-solar-315w-cdm-kit","title":"LUMii Solar 315W CDM Kit – Ceramic Metal Halide Grow Light","description":"\u003ch2\u003eSun-Like CDM Light, Ready to Hang in One Kit\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eLUMii Solar 315W CDM Kit\u003c\/strong\u003e brings together everything needed to run one \u003cstrong\u003e315W ceramic discharge metal halide\u003c\/strong\u003e grow light (CDM, also sold as CMH): the \u003cstrong\u003eLUMii Solar 315W CDM ballast\u003c\/strong\u003e, a \u003cstrong\u003eLUMii Solar 315W reflector\u003c\/strong\u003e and a lamp. Ceramic discharge lamps give a spectrum much closer to natural daylight than HPS or MH, with a high share of usable plant light (PAR) for the power drawn. Pick a \u003cstrong\u003eClosed\u003c\/strong\u003e or \u003cstrong\u003eWide Angle\u003c\/strong\u003e reflector and one of four lamps: LUMii's \u003cstrong\u003eGRO 4200K\u003c\/strong\u003e or \u003cstrong\u003ePRO 3200K\u003c\/strong\u003e, or Philips' \u003cstrong\u003eGreenPower Elite Agro 930\u003c\/strong\u003e or \u003cstrong\u003eMASTERColour 942\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eLUMii Solar 315W CDM ballast\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLUMii Solar 315W reflector\u003c\/strong\u003e – Closed or Wide Angle version, as selected\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e315W CDM lamp\u003c\/strong\u003e – LUMii Solar GRO 4200K, LUMii Solar PRO 3200K, Philips MASTER GreenPower Elite Agro 930 or Philips MASTERColour CDM-TP MW 942, as selected\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaylight-like full spectrum\u003c\/strong\u003e – a wider range of usable wavelengths than HPS, with far more natural colour.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e315 W of efficient light\u003c\/strong\u003e – the Philips Agro 930 lamp is rated at about \u003cstrong\u003e1.9 µmol\/J\u003c\/strong\u003e, and one kit lights around \u003cstrong\u003e1 m × 1 m\u003c\/strong\u003e as the main light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft-start ballast\u003c\/strong\u003e – the LUMii Solar ballast brings the lamp up gently and has \u003cstrong\u003eshort-circuit protection\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo reflector patterns\u003c\/strong\u003e – hammered-aluminium Closed for focus, Wide Angle for spread.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour lamp choices\u003c\/strong\u003e – bluer \u003cstrong\u003e4200K\u003c\/strong\u003e lamps for vegetative growth, warmer \u003cstrong\u003e3000–3200K\u003c\/strong\u003e lamps for flowering and fruiting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandalone or supplementary\u003c\/strong\u003e – the only light in a small grow tent, or extra spectrum beside HPS.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eStretch and Heat From the Wrong Light\u003c\/h3\u003e\u003cp\u003eHPS lamps put most of their output into yellow and orange light. On their own they can leave plants stretching, with long gaps between nodes and thin stems, while their heat makes temperature and humidity hard to hold in a small grow tent. A 315W ceramic discharge lamp spreads its output across a fuller spectrum, including the blue light that keeps growth compact, at about half the wattage of a 600W HPS. Plants tend to keep tighter internodes and sturdier stems from vegetative growth into flowering, and the lower heat load makes airflow and climate control easier.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssemble and hang:\u003c\/strong\u003e fit the ballast and reflector together as LUMii's instructions show and hang the fixture level above the canopy, ideally on rope ratchets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit the lamp:\u003c\/strong\u003e hold it by the base only – oil from bare fingers on the glass can create hot spots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime it:\u003c\/strong\u003e power the ballast through a suitable timer or contactor timer and set your light cycle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirst run:\u003c\/strong\u003e leave a new lamp on for at least \u003cstrong\u003e15 minutes\u003c\/strong\u003e; let a hot lamp cool before restarting it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet the height:\u003c\/strong\u003e start high and lower gradually, watching the top leaves for heat stress or bleaching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintain:\u003c\/strong\u003e LUMii recommend a new reflector about every \u003cstrong\u003e6 months\u003c\/strong\u003e to keep reflectivity high.\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 315 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPF:\u003c\/strong\u003e 590 µmol\/s with the LUMii GRO 4200K lamp (not published for the other lamps)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e LUMii (Solar range)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit contents:\u003c\/strong\u003e LUMii Solar 315W CDM ballast, LUMii Solar 315W reflector, 315W CDM lamp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting technology:\u003c\/strong\u003e ceramic discharge metal halide (CDM \/ CMH)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBallast:\u003c\/strong\u003e LUMii Solar 315W CDM ballast with soft start and short-circuit protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflector versions:\u003c\/strong\u003e Closed (focused) or Wide Angle (wider spread), hammered aluminium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLamp options:\u003c\/strong\u003e LUMii Solar GRO 4200K and LUMii Solar PRO 3200K (both double-jacketed), Philips MASTER GreenPower Elite Agro 930, Philips MASTERColour CDM-TP MW 942\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency:\u003c\/strong\u003e about 1.9 µmol\/J with the Philips Agro 930 lamp (no PPF figure is published for the other three lamps)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoverage:\u003c\/strong\u003e around 1 m × 1 m as the main light\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (LUMii drawing):\u003c\/strong\u003e 41.5 cm overall length; ballast 15.5 cm high; reflector 26.5 cm long and 11 cm deep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e main light for a small grow tent, or supplementary light in a grow room\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;\"\u003eShould I choose the Closed or the Wide Angle reflector?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eThe Closed reflector concentrates the light onto a tighter, more intense area under the lamp, which suits a 1 m × 1 m tent. The Wide Angle reflector spreads the same 315 W further, to reach more of a larger tent or grow room or to blend with other lights.\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;\"\u003eWhich lamp is best for vegetative growth and which for flowering?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eThe LUMii GRO 4200K and Philips 942 are bluer daylight lamps that keep vegetative growth compact and suit young plants. The LUMii PRO 3200K and Philips Agro 930 have more red for flowering and fruiting; LUMii describe the PRO as full-spectrum enough to run from start to finish if you want one lamp all the way through.\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 fit a different 315W CDM lamp later?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eYes. LUMii describe the Solar 315 as suitable for 315W CDM lamps, and HydroGarden supply it with both LUMii and Philips lamps, so a replacement from either range fits. With another brand, check the lamp is a single-ended 315W CDM type with the same base.\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 add it to a grow room that already runs HPS?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eYes. LUMii designed the Solar lamps to work as the only light source or as supplementary lighting alongside HID, so a kit can add a fuller spectrum to an HPS room.\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 a contactor to run it?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNot for a single 315W light – a heavy-duty plug-in timer will switch it. Once you run several lights on one schedule, a contactor timer protects the timer from their combined start-up surge.\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\n\u003ca href=\"\/products\/lumii-315w-cdm-lamp\" 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\/lumii-315w-cdm-lamp-1.jpg?v=1790169725\u0026amp;width=160\" alt=\"LUMii Solar 315W CDM Lamp\" 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;\"\u003eLUMii Solar 315W CDM Lamp\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eSpare GRO 4200K or PRO 3200K lamp\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/philips-315w-cmh-lamp\" 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\/grow-lamp-philips-315w-cmh-lamp-29227630297272.webp?v=1773439858\u0026amp;width=160\" alt=\"Philips 315W CMH Lamp\" 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;\"\u003ePhilips 315W CMH Lamp\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eSpare Philips 930 Agro or 942 lamp\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/easy-grow-rope-ratchet-hangers\" 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\/Rope-Ratchets-2-medium_landscape.jpg?v=1746904692\u0026amp;width=160\" alt=\"Easy Grow Rope Ratchet Hangers\" 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;\"\u003eEasy Grow Rope Ratchet Hangers\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eHang the fixture at an adjustable height\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/heavy-duty-timer\" 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\/Grow-Gadgets-Heavy-Duty-TImer-medium_landscape.jpg?v=1746904804\u0026amp;width=160\" alt=\"Grow Gadgets Heavy Duty Timer\" 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;\"\u003eGrow Gadgets Heavy Duty Timer\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eSets the daily light cycle for one kit\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e","brand":"LUMii","offers":[{"title":"Closed \/ LUMii GRO 4200K","offer_id":53930872537354,"sku":"LGT-LUII-017-01","price":182.65,"currency_code":"GBP","in_stock":false},{"title":"Closed \/ LUMii PRO 3200K","offer_id":53930872570122,"sku":"LGT-LUII-017-02","price":182.65,"currency_code":"GBP","in_stock":false},{"title":"Closed \/ Philips Agro 930","offer_id":53930872602890,"sku":"LGT-LUII-017-03","price":208.85,"currency_code":"GBP","in_stock":false},{"title":"Closed \/ Philips 942","offer_id":53930872635658,"sku":"LGT-LUII-017-04","price":208.85,"currency_code":"GBP","in_stock":false},{"title":"Wide Angle \/ LUMii GRO 4200K","offer_id":53930872668426,"sku":"LGT-LUII-017-05","price":182.65,"currency_code":"GBP","in_stock":false},{"title":"Wide Angle \/ LUMii PRO 3200K","offer_id":53930872701194,"sku":"LGT-LUII-017-06","price":182.65,"currency_code":"GBP","in_stock":false},{"title":"Wide Angle \/ Philips Agro 930","offer_id":53930872733962,"sku":"LGT-LUII-017-07","price":208.85,"currency_code":"GBP","in_stock":false},{"title":"Wide Angle \/ Philips 942","offer_id":53930872766730,"sku":"LGT-LUII-017-08","price":208.85,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/lumii-solar-315w-cdm-kit-1.jpg?v=1792276959","url":"https:\/\/hydrocropshop.co.uk\/products\/lumii-solar-315w-cdm-kit","provider":"Hydro Crop Shop","version":"1.0","type":"link"}