ogkush is a real bitch with PM, it's just so danky This time round I have had no problems, and my humidity has been way high. Even in my house the humidity is up at 66% (that's what happens when you live under the sea..)
I have been using a product from a company called BISON. They are like dehumidifiers that you pour this rocklike/pellet mixture into. This extracts all the shitty stuff from the air and soaks it through the rocks...if they sell them in the uk get one (mine cost 10 bucks, and the refills are like 10 bucks (last roughly about a grow). Remind me I will get a pic of it for ya.