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The HI9813-6 features the Hanna Instruments CAL Check that will allow the user to know when the probe needs to be calibrated or replaced. The meter...

Heavy 16 Bud A & B is the highest grade bloom nutrient on the Planet. It's a bold statement, but years of controlled trials and positive custom...

Heavy Finish is a highly effective all-natural bio-regulator that transforms the molecular structure of water, making it exponentially more active ...

Heavy 16 Fire 1 Liter Heavy Fire represents the ultimate hand crafted P/K booster created through strict adherence to nutritional chemistry and bio...

In our quest to provide the highest grade products with superior efficacy to our growers, Heavy 16 Professional Foliar Nutrient (PFN) is hands down...

PRIME is an ultra-diverse liquid formulation designed for use at all times of your crops cycle. We have formulated Prime to be the centerpiece of ...

Heavy Roots is a revolutionary new additive designed to enhance the rhizosphere on all levels. As always, we have packed multiple functions into on...

Hormex Rooting Powder #8 is a vitamin and hormone concentrate as well as a root-growth stimulant. Hormex prevents transplant shock by stimulating g...

The Hort2O Professional Ducting Kit includes everything needed for setting up your inline fan and filter. Includes 25' duct and 2 clamps.

Each Starter Kit will complete a full run in a garden using 15 gallons of feed water per week with a 2-week veg, 8-week flower. This kit has what y...

House & Garden Commercial CalMag is a readily available calcium/magnesium fertilizer designed to encourage rapid growth and reduce problems ass...

Hurricane Inline Fans are commercial grade, high performance fans made with quality UL components for quiet operation. The housings are made of ste...

SKU: HGC736505 Increase airflow at home or in your workplace without sacrificing floor space with this Hurricane® Supreme 16 inch Oscillating Wall ...

High-Efficiency Commercial Hydroponic Water Chillers Engineered for Precision & Performance Hydro Frost Solution Chillers are designed specific...

Hook up your garden hose to both the inlet and outlet of the Big Boy. Use the Big Boy as a stand-alone filter for all your garden needs.

Ensure your Evolution RO1000 runs more efficiently. Helps protect the RO membranes and extends their life. Less filter changes and maintenance - ev...

Heavy duty, commercial booster pump designed for continuous use. Includes integrated low pressure and high pressure switches. Can be used in conjun...

Use the Stealth RO Replacement membrane when your flow rate decreases or your PPM increases. The Stealth RO membrane will remove 98%+ of PPM of ...

Reduces up to 99% chlorine, sediment, rust, and silt Rated at 7 GPM (gallons per minutes) 5 micron nominal filtration No release of carbon fines R...

This heavy-duty, non-corrosive PVC float valve is a standard bulkhead tank mount unit with a 0.48 in orifice valve. It allows you to fill your tank...

Hydro-Logic® Flowmaster Flow Meter - 3/8 in Gallonage and filter capacity monitor operates at flow rates between 0.2—2.0 GPM. Accurately tracks t...

Europonic Nitrozime Marine Algae Extract Europonic Nitrozime Marine Algae Extract contains over 50 naturally occurring trace minerals and macro nut...

Grow like a pro with Hydrofarm's assortment of net cups, mesh pots, and baskets. They are great for all your plants, and promote healthy roots by o...

smallBoy from Hydro Logic This unit is designed to be a stand-alone filter for immediate removal of chlorine and sediment from your water. It is r...