Right I think I have everything covered now , going for a secret jardin dr90 tent and a 400w hps light with digital ballast maxi light . Just not sure about fan and filter , would it be worth the extra £20 to go for a 5" fan and filter or just keep with the 4" option . I'm having the groom in my garage so want it to be as quiet as possible . Thanks for any help I'm gonna start shopping tonight while the wife watches xfactor