HushemFlupskluk
Member
Thanks for adding that Mega.
Hey Bobble,
I dunno what your airflow speeds are. But if the airflow speed of the positive pressure intake unit is lower then the result would be higher temperatures yes.
I question myself how much positive pressure was your tent in? Did you close basically all exhasut holes to pump your tent, or did you opened the exhausts a bit so that the tent looks slightly pumped. When you touch the walls of the tent these should resist a bit. Ofcourse this is to make sure you run a proper airflow speed to cool the room. After all the goal of it all is to get AN airflow going we aggreed on that.
I guess you have to work a bit on your design. I suggest you use your foggers also. And don't forget; so far I only found positive pressure effective (overgrow) during veg (from node 5 of seeds)
and about 2 weeks into flower (because of the odor). The foggers anabled me to cool my intake air -3C. The positive pressure most likelly causes the overgrow. I have no report on the fog being responsible, but perhaps this could cause the overgrow also.
The same inactive intakes are used for inactive exhaust, otherwise where is the air going?
I also run 1200w in veg... It's a much larger scale. Have you used active exhaust to compare temperatures? You're environment might be small enough to not have this issue. I'm not trying to discredit your theory, b/c I'm not doing the research to know exactly what I'm doing... but it just seems to me like the extra heat might be why most growers run active exhaust + active intake instead of just active intake. Maybe it's just odor control...
1 - Atmosphere is for odor control that is. And besides in lower pressure the plant transpiration behaves diffirently from higher pressure. In lower pressure areas the plant will transpirate better in latter life stages. 1 - atm. during sprouting, veg and early flower could result in lesser growth.
When I consider negative pressure vs positive pressure. Would negative pressure with a same airflowspeed cool the room better? Absolutelly not. Would you perhaps need a bit more power to get to that same airflowspeed, yes. But the diffirence will be minimal. The cooling capacity is all linked to airflowspeeds.
And as I mentioned in my last post; warmth goes up. Handle heat to guide it away from the source that has to be cooled. So one should ofcourse not make a reversed airflow (from top to bottom). This way you cannot compare one technique to the other. I.M.O. this is a very basic rule in controlling the climate and testing one techn. vs the other. W.O.W. you could have done the test without the reversed airflow. Sparing me time in explaining this only to you. I suggest you next time PM me a question like this.
GL building it!