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General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians...
$32.99
General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each batch to ensure that our solutions are precisely calibrated and yield reliable readings each time they are used.
Bestseller Products
Kind K5 Series LED Grow Lights (XL750-XL1000)
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Kind K5 Series LED Grow Lights (XL750-XL1000)
Manufacturer's Description: Kind LED Grow Lights has created the World’s Best Indoor LED Grow Light The K5 Series is comprised of the perfect mix of 3 & 5 Watt Light Emitting Diodes. Each of...
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Unit Farm: UFO Cree Series LED Grow Lights (80-320)
The Unit Farm UFO LED grow lights incorporate high-output Cree™ and Osram™ LEDs for ultimate reliability, intensity, and efficiency. The Unit Farm series features Veg and Flower modes to help you save energy during...
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Mars II Series LED Grow Lights (400-1600)
Mars II 400 LED grow light Coverage: 2.5'x2.5' (76cmx76cm) Max Yield: 1.8g/watt PPFD: 752 Replace HID/MH: 250W Draw Power:110V/170W±5% / 220V/165W±5% Mars II 700 LED grow light Coverage: 3'x3' (92cm x 92 cm) Max Yield: 1.8g/watt...
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Mars Hydro Pro II EPISTAR Series (80-320)
Mars Hydro has more than 7 years experience in Grow Tents and LED Grow Lights Incredible powerful. Full spectrum, high quality but with an affordable price makes it the best choice...
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Kind K3 Series LED Grow Lights (300W-600W)
This revolutionary series of LED grow lights will produce the biggest and best yields, while consuming approximately half the electricity and producing virtually no heat. Your Kind LED Grow Light will...
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Mars Reflector Series LED Grow Lights (48-192)
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Unit Farm UFO LITE LED 200-600
UFO Lite LED grow light The New UFO Lite Series employs the growing popularity of chips - Epistar LEDs. Epistar sits firmly as the premier global supplier today, especially its...
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ZELION HL300 LED Grow White
The ZELION HL300 Grow White is a 100 to 600 watt fully dimmable and spectra tunable LED light fixture designed for horticulture applications in collaboration with growers needing special lighting...
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Lightspeed Flip 16 Lighting Controller
LIGHTSPEED FLIP 16 Lighting Controller Automated 8 ballast, 16 light switching unit Allows you to run 16 lights from 8 ballasts Works with ballasts plugged into any voltage Heavy duty,...
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Mars-Hydro Pro II CREE Series (128-256)
The MarsPro II Cree LED Grow Light is smarter and more powerful than anything Mars Hydro has ever created before. Mars Pro II Cree LED Grow Light with veg and...
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Gemini CMH 315W Reflector with Lamp
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Silverstar CMH Reflector 315W Ballast System
The Silverstar CMH 315W reflector is the latest innovation in the Silverstar line and is designed for Ceramic Metal Halide technology. Like all the Silverstar products, this reflector is made...
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