Deficiencia?

Gracias GrowCN, no sabía eso, solamente me estaba guiando por las indicaciones del growshop, me indicaron que las siga aplicando durante todo mi Grow, pero es bueno saber que es innecesario!

"I have been applying trichodermas and mycorrhizae since the first week..." It sounds like you are applying regularly during the grow. It is more like starting a fire with a match. Once a fire it lit you don't need to keep throwing more matches on the fire. Once you put mycorrhizae out there it will grow and reproduce as the roots grow so you only need to apply once. I treat the seed area when I first plant.

He estado aplicando trichodermas y micorrizas desde la primera semana, esta condición de Septoria es posible aun así? he tenido problemas de humedad algunas veces pero mantengo la carpa las 24hs ventilada y nunca alcance niveles de humedad superiores al 70%

To me it looks like some type of Septoria, a fungal disease caused by too much humidity, but without a diary or much more information, this question is difficult to answer more specifically. Once this leaf "blight" gets going, it is very hard to control. Let google guide you. Hope this helps, Organoman.