The performance of conductivity probes are affected by use due to residue build up and aging. MA9062 is a lab grade 1382 ppm TDS conductivity solution standard prepared against a NIST traceable potassium chloride solution that allows you to recalibrat

FEATURES Measures total dissolved solids (TDS) and temperature Automatic Temperature Compensation (ATC) Water-resistant housing Measurement Range: 0-5000 ppm Digital Calibration (push button) Auto-off function, data-hold function and low-battery i

Product Details NaCl calibration solution 1000 ppm comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner.

What is Z7? Z7 is the biggest technology breakthrough in the last 50 years for growers and the plants they love! Z7 is a super concentrated, two-part, proprietary probiotic enzymatic cleanser. Z7 is not a plant food; it simply allows plant foods to wo

What is Z7? Z7 is the biggest technology breakthrough in the last 50 years for growers and the plants they love! Z7 is a super concentrated, two-part, proprietary probiotic enzymatic cleanser. Z7 is not a plant food; it simply allows plant foods to

Locks out spider mites and powdery mildew while locking in water! Clone Guard locks in water molecules and prevents the clone from wilting. Water retention in the clone’s leaves and stem is critical to the forming of roots. Clone Guard allows the gr

Provides 25% more energy in the violet, blue and green spectrum than standard high pressure sodium. The combination of Super HPS and the Metal Ace conversion lamp provides the optimum spectral energy levels through all stages of plant growth. EN designati

Easily removes the caps for the larger sized containers in the House & Garden nutrient line. The House & Garden Bottle Wrench fits the 5, 10 and 20 Liter sizes. For the 20 Liter you use one side, and then for the smaller 5 Liter or 10 Liter you just flip

Use the House & Garden Pour Spouts to easily dispense contents of the nutrient containers.

Use House & Garden Nitrogen Boost® to customize a plant’s level of nitrogen and keep everything green. Certain strains can utilize this product deep into flowering.

Use House & Garden Nitrogen Boost® to customize a plant’s level of nitrogen and keep everything green. Certain strains can utilize this product deep into flowering.

House & Garden Multi Zen® unique formulation helps to achieve maximum growth with every harvest.

House & Garden Multi Zen® unique formulation helps to achieve maximum growth with every harvest.

House & Garden Top Booster® provides nutrients needed for ripening and helps set the stage for Bud-XL® and Shooting Powder.

House & Garden Soil® A & B provides balanced nutrition for enriched soils and contains essential nutrients, including a significant amount of calcium.

House & Garden Cocos® A & B is formulated to provide the perfect ratio of nutrients while taking into account the cation-exchange capacity of coir. Coco coir as a medium has unique properties that are distinct from soils and hydroponic media.

Use House & Garden Bud-XL® in the finishing weeks of flowering to improve the plant's natural flavors in the fruit sets.

Build up your plant cell walls and encourage productivity with Sturdy Stalk®, a potassium silicate supplement from Emerald Harvest®. Sturdy Stalk’s key ingredient—silica—fortifies your plants and enriches the internal structures needed to support top-heav

The beneficial bacteria in this microbial inoculant colonize the rhizosphere of your crops. While soil gardens naturally contain myriad microbes that enhance root vigor and boost nutrient uptake, Root Wizard® supplies your soilless garden, which otherwise

Get the most benefit from every flower in your garden with Emerald Harvest® King Kola®. A powerful bloom booster designed to create bigger, denser blossoms, King Kola® provides the essential elements your crops need to burst forth in heavy buds and flower

Nurture your valuable crops with Emerald Goddess®, an invigorating plant tonic from Emerald Harvest®. We’ve taken Mother Nature’s best naturally occurring elements and other components and purified and refined them into a superlative one-shot addition for

Reach the full genetic potential of your crops with Emerald Harvest® Cali Pro® Bloom A & B and Cali Pro® Grow A & B, our complete 2-part base nutrient series. Cali Pro® is a nitrogen-rich fertilizer that nourishes your high-yield, indoor-grown crops with

CNS17® Grow is extremely concentrated, cost effective and produces premium results. It contains all 17 essential elements, making CNS17® Grow an ideal food source for plants to thrive throughout the vegetative growth phase. Optimal ratios of nitrogen and

CNS17® Grow is extremely concentrated, cost effective and produces premium results. It contains all 17 essential elements, making CNS17® Grow an ideal food source for plants to thrive throughout the vegetative growth phase. Optimal ratios of nitrogen and