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PODCAST

Hydroponics Daily

Daily clips of hydroponic science throughout the whole of 2025 Presented by Dr Russell Sharp Brought to you by the team behind Gold Leaf - seed to harvest with just one bottle of feed.

leisure home & garden

All Episodes

12:12

Guano: An Ancient Fertilizer For Organic Hydroponics

Hydroponics Daily ·

2025/06/03

In this enlightening episode of Hydroponics Daily, Dr. Russell Sharp delves into the fascinating world of one of the oldest and most nutrient-rich natural fertilizers - guano. Discover its historical significance, from the Incas to its impact on American imperialism, and learn why it remains a potent choice in modern hydroponics, despite the rise of synthetic fertilizers.Explore the nuances of seabird and bat guano, its nutrient profile, and the sustainability issues surrounding its harvest

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09:55

The Kratky Method: Is it all it is kracked up to be?

Hydroponics Daily ·

2025/06/02

Welcome to Hydroponics Daily with Dr. Russell Sharp! In today's episode, we dive deep into the Kratky method of hydroponics, a unique system that requires no pumps or electricity. This passive, non-circulatory technique, developed by Dr. Bernard Kratky at the University of Hawaii, provides a minimal intervention approach to soilless cultivation. Listen as Dr. Sharp discusses the benefits and limitations of this simple, low-cost method, ideal for fast-growing, small plants like lettuce and basil

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07:46

Dechlorination - the simplest yield hack!

Hydroponics Daily ·

2025/06/01

In this episode of Hydroponics Daily, Dr. Russell Sharp explores the often-overlooked topic of dechlorinating tap water for hydroponic farming. Discover why chlorine, while beneficial for drinking water safety, poses significant risks to your plants and hydroponic systems.Learn the science behind the negative impact of chlorine and chloramines on plant health, including the suppression of beneficial microorganisms crucial for soil biology. Dr. Sharp discusses the geographical variations in chlorine

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12:45

Powdery Mildew - The main fungal disease of hydroponics

Hydroponics Daily ·

2025/05/31

Welcome back to Hydroponics Daily! In today's episode, we delve into the pervasive issue of powdery mildew that plagues both grow room and greenhouse hydroponics. As the most common fungal disease in soilless cultivation, powdery mildew presents unique challenges, appearing as a white growth on leaves and exacerbated by high humidity and crowded environments. Listen in as we explore the biology of this biotrophic fungus, its conditions for growth, and effective control measures. Discover how certain

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06:50

Hydroponic Saffron Cultivation

Hydroponics Daily ·

2025/05/30

Welcome back to Hydroponics Daily! In this episode, we explore the fascinating world of saffron cultivation through hydroponics. Saffron, a highly valued spice, is grown from the stigmas and styles of the crocus flower. Our host delves into the science and process of growing saffron hydroponically, highlighting its potential for high value returns due to the efficient use of space in vertical farming. Discover how saffron’s unique growth cycle can be managed to potentially increase crop yields

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10:59

Silicon in Hydroponics

Hydroponics Daily ·

2025/05/29

In this episode of Hydroponics Daily, host Dr. Russell Sharp explores the vital yet often overlooked element of silicon in hydroponics. Discover how silicon strengthens cell walls, enhances plant stress resistance, and acts as a natural deterrent to pests. While not considered an essential nutrient, silicon proves to be a game changer in hydroponic systems, particularly for plants such as grasses and bamboos. Learn about the benefits of silicon, its role in boosting trichome production, and the

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10:12

Hydroponic System Options: Recirculatory vs Run-to-Waste

Hydroponics Daily ·

2025/05/28

Welcome to Hydroponics Daily, your ultimate source for soilless and sustainable gardening insights. In this episode, Dr. Russell Sharp, the inventor of Gold Leaf Fertiliser, dives into the debate between recirculatory and run-to-waste hydroponic systems. Discover the ins and outs of closed-loop systems, known for water efficiency and nutrient reuse, and compare them to simpler run-to-waste systems that offer ease of management and simplicity. Dr. Sharp provides a balanced view of the advantages and

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07:46

Growing Media Options - trial update

Hydroponics Daily ·

2025/05/27

Join Dr. Russell Sharp in this episode of Hydroponics Daily as he discusses the surprising results of a recent trial comparing different growing media for spring onions. Despite initial setbacks with coco as a substrate, it emerged as the top performer in germination tests. Dr. Sharp explores the role of water holding capacity in the success of hydroponic systems and delves into future trials with fertilizers and additives to enhance spring onion growth. Whether you're a hydroponics enthusiast or

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15:10

The Dirty Secrets of Organic Fertilizers in Hydroponics

Hydroponics Daily ·

2025/05/26

In this episode of Hydroponics Daily, Dr. Russell Sharp explores the intricate world of organic fertilizers and their place in hydroponic systems. As the inventor of Gold Leaf Fertilizer—also known as Liquid Gold in the UK—Dr. Sharp delves into why hydroponics is conventionally not considered organic, due to its soilless cultivation method.The discussion covers the controversies and allowances within organic farming regulations, particularly focusing on the use of fish emulsion, seaweed extracts,

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07:49

Sunlight for hydroponic lighting in greenhouses and...

Hydroponics Daily ·

2025/05/25

Welcome to Hydroponics Daily with Dr. Russell Sharp. In today's episode, we explore the benefits of using sunlight as the original grow light for your hydroponic setups, whether in greenhouses or polytunnels. Discover how to optimize sun exposure, considering factors like geography, shading, and photoperiodicity, to enhance photosynthesis and plant growth naturally. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

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15:56

LED Lighting in Hydroponics

Hydroponics Daily ·

2025/05/24

Welcome to another episode of Hydroponics Daily! Join Dr. Russell Sharp as he delves into the world of LED lighting, a pivotal element in modern hydroponic setups. Discover why most growers are transitioning from traditional lighting methods to energy-efficient LEDs, which promise lower power consumption, extended lifespan, and targeted light spectra to optimize plant growth. Learn about the pros and cons of LED use, potential cost implications, and tips for choosing the right LED system for your

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07:32

Sodium vs. Metal Halide Lamps

Hydroponics Daily ·

2025/05/23

In this episode of Hydroponics Daily, we delve into the roles of sodium and metal halide lamps in hydroponic growing. Discover the differences between high-pressure and low-pressure sodium lamps, and why high-pressure versions were favored for plant growth despite their heat production. Learn about the advantages and limitations of metal halide lamps, including their popularity in America and their distinct white light.We explore the implications of the LED revolution on these older technologies,

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16:09

Incandescent and Fluorescent Bulbs in Hydroponics

Hydroponics Daily ·

2025/05/22

Welcome to Hydroponics Daily! In this episode, we dive into the fascinating world of lighting, a crucial element in hydroponics. We kickstart our series with a focus on incandescent and fluorescent light bulbs. Discover how these traditional lighting options, while often replaced in homes, still hold significant value in horticulture and nurseries for influencing photoperiods and supporting plant growth, particularly for photoperiodic plants like poinsettias and chrysanthemums.Learn about the

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15:24

Terpenes, Terpenoids & Isoprenes

Hydroponics Daily ·

2025/05/21

In this episode of Hydroponics Daily, delve into the fascinating world of plant chemistry as we explore isoprenes, terpenes, and terpenoids. Discover the roles these hydrocarbon compounds play in giving plants their unique flavors, scents, and stress responses. Understanding this chemistry can unlock new potential in modifying plant flavors and aromas, and even aid in addressing climate change by reducing isoprene emissions. Join us as we unpack these complex yet intriguing compounds, exploring

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09:05

Russet Mites

Hydroponics Daily ·

2025/05/20

In this episode of Hydroponics Daily, Dr. Russell Sharp delves into the world of russet mites, particularly the hemp russet mite, which poses increasing challenges in hydroponic farming. Notoriously small and often misidentified, these arachnids demand attention for effective control.Dr. Sharp explores the lifecycle, distinctive features, and common misconceptions about russet mites, while also offering practical tips for diagnosis and management. Predatory mites, UV light, and specialized sprays

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13:12

Battling Heat Stress in Hydroponics

Hydroponics Daily ·

2025/05/19

In this episode of Hydroponics Daily, we delve into the pressing issue of heat stress as the UK experiences unseasonably warm and dry weather, with similar conditions affecting other regions as we approach summer. We explore why starting hydroponics in the winter is more advantageous, as summer poses challenges with increased environmental control needs, particularly heat stress. We discuss optimal temperature ranges for most plants and what happens when temperatures exceed these ranges. Learn about

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11:45

The 7 problems for legal cannabis growers on Reddit

Hydroponics Daily ·

2025/05/18

Welcome back to Hydroponics Daily! Join us as we explore Reddit, known by some as the heart of the internet, but perhaps a different body part is more fitting (according to our colleague Matthew). We delve into the seven key issues repeatedly faced by legal cannabis growers, often asked by beginners on Reddit. Discover pitfalls like seedling stretch, calcium deficiencies, and distinguishing male flowers. Understand why knowing when to harvest is crucial, how to combat common pests like spider mites,

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09:54

Mastering Humidity and VPD

Hydroponics Daily ·

2025/05/17

Welcome back to Hydroponics Daily! In this episode, we delve into the importance of managing humidity in hydroponic grow rooms and greenhouses. Discover how controlling humidity levels is crucial for preventing plant dehydration during propagation, limiting pests and diseases, and ensuring optimal growth conditions as plants mature.We also explore the significance of Vapor Pressure Difference (VPD) and how it can be automated with commercial controllers for maintaining the ideal environment for

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09:07

Pesticide Residues - the hidden benefit of hydroponics

Hydroponics Daily ·

2025/05/16

In this episode of Hydroponics Daily, explore how hydroponic gardening offers a safer, toxin-free way to grow your own produce. Delve into the challenges of conventional farming, such as pesticide and heavy metal residues, and learn how hydroponics can help control what goes into your food. Discover the benefits of cultivating plants in a controlled environment, ensuring the absence of potentially harmful chemicals. Whether you're an amateur or professional, gain insights into the advantages of

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03:49

Clover Mites: ever heard of them? You've certainly...

Hydroponics Daily ·

2025/05/15

Welcome back to Hydroponics Daily, where today’s episode dives into the world of clover mites. These bright red mites are often mistaken for the more problematic red spider mites, but they belong to an entirely different species. While clover mites are usually seen on lawns, walls, and stones, red spider mites are a known pest for crops, particularly in greenhouse and indoor hydroponic settings.Despite their appearance, clover mites pose no significant threat to plants and generally stay outdoors,

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314 results

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