Pioneering Hydroponics

Since 1976

Why you should try DWC with your next crop

Why You Should Try DWC


What is DWC?

Deep Water Culture, or DWC, is one of the simplest and most popular methods of hydroponic growing. There’s no timing of feeds and no chance of under or overwatering, as long as you don’t let the grow system run out of nutrient solution you can be pretty certain of a huge crop!
DWC Systems

DWC Systems include an air pump and an air stone which mix the nutrient and create a constant stream of bubbles. The roots hang down into these bubbles so they have unrestricted access to both oxygen and water, meaning plants can absorb what they need when they need it.


Aerate those roots!

Oxygen is essential for root health, without it they can’t survive, give more of it and they thrive. Remember that we said roots hang into the bubbles? Without constant access to oxygen those submerged roots would rot and die – but when bubbles (by their very nature these are oxygen rich) are constantly provided to the root zone, growth is incredible. DWC is known for producing some of the biggest yields in a single plant!

Growers using Deep Water Culture hydroponic systems also benefit from using less growing media, just a handful of pebbles are used per plant and their purpose is to hold the plant upright.


  • Very low maintenance - Once your DWC system is set up, it requires very little maintenance. It can be left alone for 24 hours! 
  • Constant feeding – DWC gives the right amount of oxygen and nutrients to your plants
  • Extremely fast-growing time compared to soil
  • Bigger yields –  the lack of growing media gives more space for your plants to grow as large as possible!


Oxypot and IWS DWC Systems

Types of Systems

DWC (Deep Water Culture) and R-DWC (Recirculating) grow systems permanently suspend roots in a root chamber, while an air stone in the chamber oxygenates the solution.

In DWC systems such as the Oxypot, the solution remains in the root chamber until either the grower remixes it manually or by using a timer, meaning that a pH stable nutrient is invaluable.

In R-DWC systems, constant recirculation between root chambers keeps the pH balanced. The solution becomes even more oxygenated, which on large scale set-ups means it actually outperforms DWC!

Things to be Mindful of

  • EC (The measurement of nutrient ratio of solution) will change dependent on how fast a plant is using the nutrients. If nutrient uptake is high, then EC will drop.
  • pH fluctuates daily, be sure to check that the PH is between 5.7 and 6.4 on a DWC grow schedule
  • To avoid common problems such as Pythium, we recommend using a chiller

Plant Magic DWC

Plants under lights will take up water at a greater rate than they take up nutrient. Over time the EC of the solution will rise. Make sure to check EC and add extra nutrient if required. Then adjust pH level and perform a complete solution change every 2-3 weeks, depending on plant size, water quality and hardness.

The nutrients you choose are also important. As high bubbling intensity can cause pH to change rapidly, we recommend using a DWC nutrient specially formulated for use in deep water culture systems to produce strong, healthy plants.

Plant Magic DWC base nutrient contains trace elements, the majority of which are chelates to keep them soluble and available to the plant, ensuring exceptionally fast growth and huge crops.

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