So I just noticed a couple of days ago that I had a spider or more than one on one of my plants. Only one and not the spider mites but a huge spider. All the tops and leaves were covered in webs. So I used neem oil and sprayed them all down and cleaned all the webs off. It looks good now. Was kind of weird. I have ran into many problems getting used to this greenhouse. It is definitely a learning experience. It very handy to over winter our plants though. I have to get better air flow for next year and some better heat for winter.