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Photoperiod

Photoperiod

Basics Definition Legacy

Day length; the relationship between the length of light and dark in a 24 hour period.

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Alkaline

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Fungicide

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Acid

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Internodal

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Pyrethrum

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Hygrometer

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Burn

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Macronutrients

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Germination

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Hybrid

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Reservoir

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Necrosis

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Feedcharts

Whether you’re a commercial grower or a hobbyist, our Feedcharts are the easy and precise way to give your plants what they need, when they need it, without the guesswork. Download them today for a better grow tomorrow.

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General Hydroponics

We are the leading innovator in the field of hydroponics for more than 40 years. We share your passion for plants — whether you’re growing hemp, vegetables, fruits, herbs or other high value crops. That’s how we got our start, and that’s what keeps driving us forward.

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