Explore the full range of hydroponic supplies at Holland Horticulture. From LED grow lights and plant nutrients to grow tents, ventilation systems, and climate control solutions — everything you need for successful indoor growing is right here. We stock trusted brands like Lumatek, Telos, Atami, Canna, and many more, with expert support and fast UK delivery.
LUMii Switch Blade LED Grow Light 150W Full Spectrum
Sale price£144.00
Mammoth P - Microbial Inoculant
Sale priceFrom £49.99
Manifolds
Sale priceFrom £0.70
Mantis Reflector
Sale price£71.50
Matrix Tent
Sale priceFrom £185.00
Max-Fan Pro Series Extraction Fan
Sale priceFrom £125.00
Maxi Jet Water Pump
Sale priceFrom £25.00
Maxibright Compact Ballasts 250w - 1000w
Sale priceFrom £59.95
Maxibright Daylight 1030w PRO LED Grow Light
Sale price£1,349.00
Maxibright Daylight 300W LED Grow Light
Sale price£326.00
Maxibright Daylight 480W LED Grow Light
Sale price£500.00
Maxibright Daylight CMH Argo Lamp 600W 3K
Sale price£110.00
Maxibright Daylight CMH Elite Lamp 600W 4K
Sale price£110.00
Maxibright Daylight LED UVA UVB 60W
Sale price£270.00
Maxibright Daylight Lighting Controller
Sale price£275.00
Maxibright Dual Spectrum HPS Lamp 600W
Sale price£18.00
Maxibright Super Bloom 600W
Sale price£25.00
Maxibright Super Grow Metal Halide 600W
Sale price£35.00
Maxibright Varidrive Digital Ballast 600W
Sale price£52.00
Maxibright Warp Drive Pro Ballast 600W
Sale price£38.00
Maxiswitch 26A 4 Way Controller
Sale price£70.00
Measuring Cup
Sale price£0.65
MegaPot 16L with 16L Root Pouch
Sale price£40.00
MegaPot 22L
Sale priceFrom £40.00
MegaPot 39L & 56L
Sale priceFrom £45.00
MegaPot Multi-Pot 16L 4 Pot with Root Pouch
Sale price£90.00
Metal Back Draught Shutter 250
Sale price£24.00
Metal Tee Pieces
Sale priceFrom £8.50
Metal Wall Flanges
Sale priceFrom £2.95
Metal Y Pieces
Sale priceFrom £13.45
Micro Jet and Micro Jet Oxy Pumps
Sale priceFrom £15.00
Mills Nutrients Basis A&B
Sale priceFrom £25.00
Mills Nutrients C4
Sale priceFrom £50.00
Mills Nutrients CalMag
Sale priceFrom £24.00
Mills Nutrients Start
Sale priceFrom £35.00
Mills Nutrients Ultimate PK
Sale priceFrom £50.00
Mills Nutrients Vitalize
Sale priceFrom £58.00
Milwaukee EC Pen C66
Sale price£40.00
Mini Ray Temperature Infrared Gun
Sale price£35.00
Mission Controls LogicFan Controller 6.5A
Sale price£49.95
Mission Controls Twin Fan Speed Controller 4.5A
Sale price£118.00
Moisture Meter Digital
Sale price£21.50
Monkey Nutrients Bloom A&B
Sale priceFrom £20.00
Monkey Nutrients Boost
Sale priceFrom £35.00
Monkey Nutrients Grow A&B
Sale priceFrom £20.00
Monkey Nutrients Resin
Sale priceFrom £30.00