Thank you for all the answers you gave me. I have just one short question if I may, in reference to the system in my previous question (4m x 20m DFT tank).
If I shut the pump down at night and only run it during the day time, do you think it will be ok in terms of oxygenation? I am planning to construct an additional three grow tanks each with its own pump, and would like to save a bit on energy costs by turning the pumps off at night.
(The previous question was answered in my August column. It related to the set up and management of a 20,000 litre Deep Flow Technique (DFT) system, which held an extremely high 13 litres of nutrient solution per plant.)
Answer by RICK DONNAN See More