leaf curl

[bassai]

my weed has a little bit of leafcurl at the top they are 7weeks old.what causes this what is the cure how bad is leafcurl .many thanks. newbie

[xxxhazexxx]

its caused by low humidity if its been 35% or lower for a period of time

[bassai]

thanks. how do i measure the humidity?how do i adjust it up or down?

[meddy]

What kind of curl is it? Up or down? At the edges or the tip?

Get a hygrometer to measure the humidity. Adjusting it can be as easy as adding a container with water in to evaporate, but it depends on the rate of air exchange.

[lkdj2003]

I have moved this post into the right thread so you will get more response.