I've been having some problems with my last couple batches of clones. I'm not gettin as many to root as I'd like too or what I was getting last summer. I think my main problem is the humidity as its only 35%. I have a 72 plug dome & I was using a reg heating pad but it would shut off at a certain temp so I got a heat mat from the hydro store & its not gettin as warm. I'm misting the plants & dome walls 2 times a day. Is there a way to increase the humidity in the dome? Thanx.