{"title":"Metal Halide (MH) Grow Lamps","description":"","products":[{"product_id":"sunmaster-cool-deluxe-metal-halide-7-2k-lamp","title":"Sunmaster Cool Deluxe Metal Halide 7.2K Lamp","description":"\u003cp\u003eSunmaster bulbs are one of the most popular solutions for commercial hydroponics in the uk.\u003c\/p\u003e\n\u003cp\u003eMetal Halide (MH) bulbs are specifically engineered for early growth and vegetation. Their output is centred on the blue end of the light spectrum.\u003c\/p\u003e\n\u003cp\u003eThe Lamps have been chemically balanced to produce as much photosynthetically active radiation (PAR) output as possible, a measure of total light available for photosynthesis. The plants can use most of the light generated during growth, producing more biomass, larger leaves and stronger stems, putting your plants in the perfect position for blossom.\u003c\/p\u003e\n\u003cp\u003eMH should be used for the growth phase only unless they are being utilised as a part of a larger garden with mixed lighting. Professional growers often use a ratio of 2 HPS: 1 MH throughout the flower to produce optimum results.\u003c\/p\u003e\n\u003cp\u003eThese work on a normal HPS ballast so you can easily switch between bulbs to optimise your results through all stages of growth; seedling, vegetation and flower.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGeneral Information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe SunMaster Cool Deluxe bulbs are suitable for the vegetative growth stage;\u003c\/li\u003e\n\u003cli\u003eThe bulbs emit light ranging from 5,000 Kelvin to 6,500 Kelvin;\u003c\/li\u003e\n\u003cli\u003eThe bulbs have an output of 5000 lumens;\u003c\/li\u003e\n\u003cli\u003eThe lamps are compatible with 1000W HPS ballasts;\u003c\/li\u003e\n\u003cli\u003eThe SunMaster bulbs are available in 250W, 400W and 1000W sizes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEasy to use;\u003c\/li\u003e\n\u003cli\u003eIncreased reliability;\u003c\/li\u003e\n\u003cli\u003eHigh-performance lighting solutions;\u003c\/li\u003e\n\u003cli\u003eLong lifespan;\u003c\/li\u003e\n\u003cli\u003eMade at the highest quality standards.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUNMASTER","offers":[{"title":"250w","offer_id":39634868011192,"sku":"1030","price":30.0,"currency_code":"GBP","in_stock":false},{"title":"400w","offer_id":39634868043960,"sku":"1031","price":34.0,"currency_code":"GBP","in_stock":false},{"title":"600w","offer_id":39634868076728,"sku":"1028","price":54.0,"currency_code":"GBP","in_stock":true},{"title":"1000w","offer_id":39634868109496,"sku":"1029","price":69.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/9092\/7032\/products\/grow-lamp-600w-sunmaster-cool-deluxe-metal-halide-7-2k-lamp-36745988505815.jpg?v=1780148414"},{"product_id":"600w-metal-halide-lamp-maxibright","title":"Maxibright 600w Metal Halide Lamp","description":null,"brand":"MAXIBRIGHT","offers":[{"title":"Default Title","offer_id":39635087065272,"sku":"2124","price":45.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/9092\/7032\/products\/grow-lamp-maxibright-600w-metal-halide-lamp-29228179620024.jpg?v=1780149207"},{"product_id":"blv-horturion-1000w-400v-de-metal-halide","title":"BLV Horturion 1000W 400V DE - Metal Halide","description":"\u003cp\u003eBLV Horturion 1000W Metal Halide Lamp for Deva Revolution Grow Light Developed with BLV on our DEva test bed, this 5500K QMH lamp is a perfect fit for our Silent Square wave DEva driver. Features: MH 1000W lamp with extreme efficiency of 1.8µmol\/W High PAR efficiency (PAR value) High PAR maintenance for the entire service life.\u003c\/p\u003e\n\u003cp\u003eGood to very good colour rendering Optimised spectral distribution for healthy plant growth Compatible with DE fixtures and BLV Power Supply\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDouble-ended metal halide lamp\u003c\/li\u003e\n\u003cli\u003eDifferent power levels: 600 W \/ 750 W \/ 1000 W\u003c\/li\u003e\n\u003cli\u003eThe 1000 W version is the world first double-ended MH 1000 W lamp with extreme efficiency of 1.8µmol\/Ws\u003c\/li\u003e\n\u003cli\u003eHigh PAR efficiency (PAR value)\u003c\/li\u003e\n\u003cli\u003eHigh PAR maintenance for the entire service life\u003c\/li\u003e\n\u003cli\u003eGood to very good colour rendering\u003c\/li\u003e\n\u003cli\u003eOptimised spectral distribution for healthy plant growth\u003c\/li\u003e\n\u003cli\u003eCompatible with luminaires for double-ended lamps\u003c\/li\u003e\n\u003cli\u003eOptimum efficiency in combination with BLV power supply units\u003c\/li\u003e\n\u003cli\u003eSuitable for open fixtures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMetal halide lamps (MH) emit a high amount of violet and blue light, which suppresses stem elongation, increases beneficial compounds and promotes vegetative growth.\u003c\/p\u003e\n\u003cp\u003eIt is, therefore, well-suited for encouraging compact growth in decorative plants, enhancing leaf pigments in coloured vegetables, enriching secondary metabolites in the pharmaceutical and cosmetic industry, and making crops more stress resistant in general.\u003c\/p\u003e\n\u003cp\u003eAs the spectrum is also much closer to that of sunlight, colour rendering is greatly improved which makes taking inventory and harvesting easier.\u003c\/p\u003e","brand":"DIMLUX","offers":[{"title":"Default Title","offer_id":42885965873367,"sku":"6685","price":130.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/9092\/7032\/products\/grow-lamp-blv-horturion-1000w-400v-de-metal-halide-37257273475287.jpg?v=1780156670"},{"product_id":"hortiking-metal-halide-lamp-400w-600w","title":"Hortiking Metal Halide Lamp – 400W \u0026 600W (Veg Light)","description":"\u003cp\u003e\u003cstrong\u003eHortiking Metal Halide Lamp – 400W \u0026amp; 600W (Veg Stage)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsed by the old school and trusted by the pros, the \u003cstrong\u003eHortiking Metal Halide\u003c\/strong\u003e is the go-to lamp for tight, compact, leafy growth during the vegetative stage. If you want to \u003cstrong\u003ereduce plant stretch\u003c\/strong\u003e and build short, dense plants ready for heavy flowering—this is the bulb for you.\u003c\/p\u003e\n\u003cp\u003eThis is the one that looks like a \u003cem\u003eblown-up condom\u003c\/em\u003e (in case you were wondering). But don’t be fooled by its shape—this lamp delivers serious blue-spectrum light that keeps internodes tight, leaves lush, and stems sturdy. Perfect for early growth, mother plants, or bridging the gap between seedlings and flower.\u003c\/p\u003e\n\u003ch3\u003eWhy Growers Rate It\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassic blue spectrum\u003c\/strong\u003e – promotes dense, bushy vegetative growth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduces stretch\u003c\/strong\u003e – ideal for compact plants before bloom.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable performance\u003c\/strong\u003e – stable colour temperature and lumen output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits any standard E40 reflector\u003c\/strong\u003e – plug-and-play compatibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOld-school reliability\u003c\/strong\u003e – proven tech that still outperforms many budget LEDs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specs\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eWattage\u003c\/th\u003e\n\u003cth\u003eSocket\u003c\/th\u003e\n\u003cth\u003eSpectrum\u003c\/th\u003e\n\u003cth\u003eColour Temperature\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eHortiking MH 400W\u003c\/td\u003e\n\u003ctd\u003e400W\u003c\/td\u003e\n\u003ctd\u003eE40\u003c\/td\u003e\n\u003ctd\u003eBlue Spectrum (Metal Halide)\u003c\/td\u003e\n\u003ctd\u003e~6500K\u003c\/td\u003e\n\u003ctd\u003eVeg stage \/ mother plants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHortiking MH 600W\u003c\/td\u003e\n\u003ctd\u003e600W\u003c\/td\u003e\n\u003ctd\u003eE40\u003c\/td\u003e\n\u003ctd\u003eBlue Spectrum (Metal Halide)\u003c\/td\u003e\n\u003ctd\u003e~6500K\u003c\/td\u003e\n\u003ctd\u003eLarge veg rooms \/ pre-flower transition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003ePro Tips\u003c\/h3\u003e\n\u003cp\u003eSwap out your Metal Halide for an HPS when you flip to flower for maximum yields. The \u003cstrong\u003e400W\u003c\/strong\u003e is perfect for small to mid-sized tents, while the \u003cstrong\u003e600W\u003c\/strong\u003e version is built for more serious setups that need deeper canopy penetration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Hortiking Metal Halide Lamp\u003c\/strong\u003e is simple, tough, and still one of the best ways to grow compact, healthy plants the natural way—no stretch, no drama, just solid results.\u003c\/p\u003e","brand":"HORTIKING","offers":[{"title":"400w *CLEARANCE*","offer_id":44056841978071,"sku":"9173","price":9.99,"currency_code":"GBP","in_stock":true},{"title":"600w","offer_id":44056842010839,"sku":"9174","price":18.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/9092\/7032\/files\/grow-lamp-hortiking-metal-halide-lamp-39478582968535.jpg?v=1693265520"}],"url":"https:\/\/www.thehydrobros.com\/en-de\/collections\/metal-halide-mh-grow-lamps.oembed","provider":"The Hydro Bros","version":"1.0","type":"link"}