Hi there ICMag,
Last year we made one of many mistakes in our greenhouses, by not having any fans at all. It might've not been such a problem if our greenhouses were much bigger than our plants, and we didn't have so many moist/humid/rainy days during flowering. We ended up with lots of bud rot and PM. This year we were very pro-active with fans with hopes of avoiding that this time, and had oscillating fans in each section of each greenhouse. For a while it seemed amazing. It kept the temps down and the air fresh. We soon realized that the vegging plants hated it once they grew tall enough, and that everywhere that the fans were blowing on the plants, growth was greatly reduced, and it was also fuckin up the leaves. So now we just have fans running along the top of each house, all in one direction, cycling fresh air in and old air out. That seems to be working well. But as we approach week 3-4 of flowering, we are worried that there will not be enough air moving around the plants. Are the exchange fans going to be enough to reduce moisture? We have them running 24hrs a day. What do some of you guys do for greenhouse fans? If we have the fans oscillating during flower, will it have less of an effect on the buds than it did on the veg leaves? We are considering have them oscillate again and in turn blow around the tops of the plants. I'm going to browse around and see what other people do but I wanted to get some answers if possible. These are big greenhouses. 50x20x15
Cheers.
Last year we made one of many mistakes in our greenhouses, by not having any fans at all. It might've not been such a problem if our greenhouses were much bigger than our plants, and we didn't have so many moist/humid/rainy days during flowering. We ended up with lots of bud rot and PM. This year we were very pro-active with fans with hopes of avoiding that this time, and had oscillating fans in each section of each greenhouse. For a while it seemed amazing. It kept the temps down and the air fresh. We soon realized that the vegging plants hated it once they grew tall enough, and that everywhere that the fans were blowing on the plants, growth was greatly reduced, and it was also fuckin up the leaves. So now we just have fans running along the top of each house, all in one direction, cycling fresh air in and old air out. That seems to be working well. But as we approach week 3-4 of flowering, we are worried that there will not be enough air moving around the plants. Are the exchange fans going to be enough to reduce moisture? We have them running 24hrs a day. What do some of you guys do for greenhouse fans? If we have the fans oscillating during flower, will it have less of an effect on the buds than it did on the veg leaves? We are considering have them oscillate again and in turn blow around the tops of the plants. I'm going to browse around and see what other people do but I wanted to get some answers if possible. These are big greenhouses. 50x20x15
Cheers.
