First grow ww

Hi there, It’s not so difficult to get RH 60~70% .But it’s very important for seedling at young age.They are very fragile and if you can’t give them the perfect growing conditions,they couldn’t grow properly.Happy growing... ✌️

Not crucial , but less than 40 is a problem always

It's not the end all and be all. It's just the ideal humidity for young plants to reach maximum potential. You can go with less if you need to. Cannabis can be grown under all sorts of conditions=)

todo depende del tamaño de las plantas! tal vez despues de la 3era semana de veg es cuando realmente empiezan a necesitar mas luz!

When u have filled 3/4 of the orizontal space and not less than half height of the max you have ( thake care of the minimum lamp distance for the height check)