The nutrient film technique features a similar setup to the ebb and flow system. However, instead of occasionally flooding the growing tray, it provides a constant stream of water and nutrient solution to the roots. The reservoir contains an air stone to aerate the solution and an electric water pump to circulate the solution into the growing tray. The growing tray sits at a slight angle to enable the solution to flow downward and back into the reservoir after passing the roots.
Passive hydroponic systems feature minimalist designs. They use low-tech methods to deliver water and nutrients to cannabis roots without using additional electricity.
It depends on what system you’re using. Kratky systems don’t require any hand watering at all. Wick systems that use soil are often superior to hand watering, as the slow and steady delivery of water into the medium helps to reduce overwatering. However, they sometimes fail to provide enough water to large and thirsty plants, meaning growers may need to occasionally intervene with a watering can.
e) Airstone and pump
b) Lighting hangers
Hydroponic cannabis has an ideal temperature of 20°C. This factor can be monitored using a water thermometer and altered using a water heater if the temperatures are too low.
If you talk to a grower who has experience with hydroponic growing, one of the first things they’ll probably tell you is that their hydroponic plants grow much, much faster than those in soil. This is a prime advantage of this method of cultivation—hydroponic plants usually grow 30–50% faster and often provide larger yields. A large reason for this is that nutrients within a hydroponic system are much more readily available to plants. The nutrients are suspended in water and enter directly into the root system as there is no soil to navigate through. In contrast, plants growing in soil must search through the medium in order to uptake nutrients from below. Easy access to nutrients allows plants to preserve energy, which is then diverted to growth efforts instead.
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This article was co-authored by Lauren Kurtz. Lauren Kurtz is a Naturalist and Horticultural Specialist. Lauren has worked for Aurora, Colorado managing the Water-Wise Garden at Aurora Municipal Center for the Water Conservation Department. She earned a BA in Environmental and Sustainability Studies from Western Michigan University in 2014.
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Whether you call it weed, cannabis, pot, marijuana, or something else, the plant known as Cannabis sativa is actually easy to grow at home when you know what you need to do. Growing hydroponically will provide you with higher yields and a shorter grow time compared to growing in soil, but it can often be difficult for the beginning grower to get started with hydroponics. However, most people think of plants growing in water when they think “hydroponics” but actually your plants will get many of the benefits of hydroponics as long as they’re getting their nutrients directly in their water supply. However because of superior air to water ratio in hydroponics, it remains the industry standard. This tutorial will show you step-by-step how to grow your marijuana in 3-4 months using the (arguably) easiest hydroponic method: hand-watering in a soil-less medium.