Strange light green spots

Tuve el mismo tipo de manchas en una hoja a la quinta semana vegetativa de la planta. En mi caso no utilicé aún ningún tipo de fertilizante líquido, únicamente un sustrato rico en materia orgánica, compost y algo de guano. Por lo que no creo que el motivo sea sobre fertilización. Abrí una pregunta en el blog, porque nunca había visto este tipo de manchas, pero aun no tengo una respuesta clara. Un saludo.

Looks to me like you introduced nutrients to the plant too soon. I have a similar issue with My Grandaddy Purple auto. She was also introduced to nutrients too early. Young plants cannot process the nutrients that well yet. Hence why many start with half-doses and see how the plant responds. I would give the plant just ph'd water the next 7 days and see if the problem appears on more leaves. If not, you're set :) Hope this helps, even just a little.

no diary. but guessing prob with EC and PH, maybe waterlogged. If its a cheep coir, you want to buffer before hand not during. I use CANNA Coir as I like how its prebuffered and aged. Guessing you might need to get a bit of run off with your feedings. Also try starting a diary. Also best to mix in min 20-30% perlite into coir. helps it not be waterlogged after feeding.