24.02.2011 - Jorge Cervantes
Algae and Nitrogen
If I remember correctly plants in hydro need nitrogen, but algae growth that leads to stem rot is a side effect. I've seen nitrogen filters online but thought they would be pointless. I am wondering if there is nitrogen isotope or usable mixed nitrogen molecule that can be absorbed by the plant but not absorbed by algae?
This heavy hitting BC Kush from Next Generation is an example of one of the many
All higher plants need nitrogen and nitrogen is often associated with green leaves. Algae are green, but do not necessarily need nitrogen found in fertilizer to grow. Using scientific terms like nitrogen isotope and nitrogen molecule sound impressive but such terms are complicating the subject and missing the point. Nitrogen is part of the air we breathe and is most often readily available to plants via “grow„ fertilizers.
Look at the conditions that cause algae growth and don't get bogged down with scientific theory and terms. Algae grow on moist surfaces in the presence of light. Remove one or both of the elements (light or moisture) and the algae will disappear. Removing moisture is difficult but blocking light is very simple, just cover the growing medium with plastic or something to exclude the light and the algae cannot grow. You can also run an algaecide in the hydroponic nutrient solution.
Stem rot, pythium or damping-off, is promoted by excessive moisture and lack of air in the growing medium. Sure algae can lead to stem rot, but this is because similar conditions are required for algae growth and stem rot.Tags: Jorge Cervantes | Nutrients | Hydro Edition: Soft Secrets 2011 - 1