What is Hydroponics?
Hydroponics is a method of growing plants without soil. Instead of drawing nutrients from the ground, plants grown hydroponically receive a precisely controlled nutrient solution delivered directly to their roots — either continuously or at regular intervals. The result is faster growth, higher yields, and more efficient use of water and space compared to traditional soil growing.
Hydroponics has been used commercially for decades, but advances in equipment and falling costs have made it increasingly accessible to UK home growers over the past few years.
How Does Hydroponics Work?
In a hydroponic system, plants are supported in an inert growing medium (such as clay pebbles, rockwool, or coco coir) rather than soil. Their roots are exposed to a nutrient solution — water mixed with precisely measured mineral nutrients — that provides everything the plant needs to grow.
The key variables in any hydroponic system are:
- pH: The acidity of the nutrient solution. Most crops thrive at pH 5.5–6.5. Outside this range, plants can't absorb nutrients even if they're present.
- EC (Electrical Conductivity): A measure of nutrient concentration in the solution. Too low = hungry plants; too high = nutrient burn.
- Dissolved oxygen: Roots need oxygen as well as nutrients. Hydroponic systems use air stones, pumps, or recirculation to keep oxygen levels high.
- Temperature: Both air and water temperature affect growth rate and disease risk.
Main Types of Hydroponic Systems
Deep Water Culture (DWC)
Plants sit in net pots above a reservoir of oxygenated nutrient solution, with roots dangling directly into the water. Simple and effective for small grows.
Recirculating Deep Water Culture (RDWC)
An advanced version of DWC where all buckets are connected to a central reservoir. Nutrient solution circulates continuously through the system, delivering consistent nutrition to every plant. This is the system of choice for serious UK home growers — and the core of the MUSHROOMTEC range.
Nutrient Film Technique (NFT)
A thin film of nutrient solution flows continuously over the roots in a sloped channel. Popular for leafy greens and herbs.
Ebb and Flow (Flood and Drain)
A grow tray is periodically flooded with nutrient solution and then drained. Versatile and suitable for a wide range of crops.
Why Are UK Growers Switching to Hydroponics?
- Speed: Hydroponic plants typically grow 30–50% faster than soil-grown equivalents.
- Yield: More consistent nutrient delivery and oxygenation leads to larger, heavier harvests.
- Water efficiency: Hydroponic systems use up to 90% less water than soil growing — water is recirculated rather than lost to the ground.
- Space: No soil means no need for large outdoor plots. Hydroponics works in grow tents, spare rooms, garages, and greenhouses.
- Year-round growing: Indoor hydroponic setups are not limited by UK seasons — grow tomatoes in January if you want to.
Getting Started with Hydroponics in the UK
The easiest way to start is with a complete, pre-matched bundle that includes everything you need. Our 4-Bucket RDWC Starter Bundle is designed specifically for first-time hydroponic growers — all components are pre-matched and compatible, and our RDWC Beginners Guide walks you through setup step by step.
Browse our full range of Bundle Offers and Hydroponic Systems to find the right starting point for your space and goals.