Looks like a great system, don't think I'd cope well working in 40C temps! It's been bad enough in the low 30's lol. Another observation for miconutrient deficiency is where the leaf edges join the petiole, if it's uneven it can indicate a Zn deficiency iirc, trying to learn more about these types of observations but there's not much info out there, maybe this will improve as more farmers start using sap/tissue analysis, do you know of any resources for this info Dario?
It's too cold here...I gave up with my tomatoes Dario this year....if you were me which I should have? ....thank you for sharing....i hope that one day you will decide to come back in UK soon ...