In application, both methods can produce huge yields. The systems look similar but work in very different ways. Each one has its benefits depending on the environment in which they are placed.



The AERO system generally has more control of the overall size of the plant as the availability of nutrient solution is regulated. Plants grown in the AERO™ system are very uniform, ideal for the ‘sea of green’ technique.

The RDWC method gives plants access to nutrient solution 24/7 so if the plants are given slightly too much veg time, in the flowering stage they can quickly gain height and grow too close to the lights. With practice and following recommendations on veg time, the RDWC can produce some fantastic yields with a lower number of plants.



The AERO system wins here as it is virtually silent in operation. Generally, the water pump will engage once every 30 minutes or so for only 30 sec – 1 min. If noise pollution is a concern then the AERO™ takes precedent over the RDWC.

The RDWC systems use JET-STREAM™ air pumps which are one of the quietest pumps on the market. These pumps are very quiet when placed on a concrete floor but vibrations are more audible on a wooden floor.


 Power failure

In the event of a power cut the RDWC system fairs better as there’s plenty of water in the system to keep the plants alive for an extended period of time. The roots suspended in the AERO™ system have no medium to act as a buffer. In the event of a power failure dehydration can happen within a matter of hours. This time period can be extended by hand watering.