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Do you think my two photoperiod plants will survive 8 weeks on irrigation with a ph of about 8 in southern Spain?
They’re looking a bit yellow already..
If your worried about the PH can mix in some amendments that lower PH in the soil or just leave it.
I agree with Organoman that you should likely find a solution to the feed. dry amendments feed for longer periods of time. Or a slow release fertilizer but if it gets hot they release more.
They will be ok...........cannabis has survived for tens of thousands of years without human enforced optimum conditions.
If they are yellow, it is a nutrition/soil problem, not a water problem.
8 ist schon sehr hoch. Kannst du das Wasser nicht in einem Tank sammeln? Dann kann es noch etwas Richtung 7 gehen und wäre weniger problematisch. Sonst hilft Phosphorsäure, die ist richtig stabil und man kann viel Wasser anmischen und länger stehen lassen.