Maintaining nutrient concentration
Your FAQ section was very helpful getting my Aeroponic system started. My tomato seedlings are now moving on into the vegetative stage. I am however, confused by your instructions regarding adding water rather than nutrients to maintain volume in the tank. If I just add water, I am diluting the nutrient concentration which I thought should remain stable. So, after adding water, I have been adding nutrients to keep my concentration at the correct level. Am I missing something here?
Thanks for the help.
Answer from Stella:
The best way to explain is this: when your solution volume depletes due to evaporation, the only thing disappearing into the air is water, not the nutrients, leaving behind a stronger mix. So you top up for a while with just plain water. If you keep adding nutrients, you will end up with a way-too-rich mixture. After a few water toppings, you will change out the whole thing. This process is fully explained here, we have had great luck with this method:
Hope this helps!
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