Hi luche, Hi kakaze,
Thanks for your previous answers they have put me on the right track and gave a bit of hope.
I am growing tomatoes with children in china.
We are using NPK soil
nutrients with an obscure micronutrient solution.(no details on the quantity of iron zinc borum)
20-20-20 vegetive and 10-30-20 flower.
The results are variable but mostly tremendous veg groth with little production and premature plant casualties.(yellow from the tip of the the leaves and generally a drying up of plants)
It like if the plants can not retain the water properly in the flower stage.
More over the flowering stage takes ages and the plant just grow bigger.
Any way I was wondering if kakaze your solution would work for tomatoes?
Luche globalization is strange for sure: many articles made here are never sold here. I'm interested in a formula that i could submit to the city chemist.
Bests,
Tuff
Ps : I have purchased some general hydroponics during a trip that I am trying out on a small batch.
They seem okay but it's ridiculously expensive for our larger setting.