What is the exist amount of nitrogen in the nutrient solution?

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Ali Mohammed Noori

I think that you should read some articles

Paul Milham

The existing amount of N is what you add but that is not what you want to know. Please clarify the question.

I can say that you should avoid concentrated solutions like Hoaglands and use much less concentrated solutions and replace more often

Ahmad Azeem

Paul Milham .

could you recommend me which solution i will use instead of Hoagland.