# RH and Temp Question **URL:** \ **Category:** Climate\ **Created:** [August 25, 2017, 3:11pm UTC](https://ilgmforum.com/t/rh-and-temp-question/14702 "2017-08-25T15:11:18Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![dmykins](https://avatars.discourse-cdn.com/v4/letter/d/a6a055/32.png) [@dmykins](https://ilgmforum.com/u/dmykins)\ **Post date:** [August 25, 2017, 3:11pm UTC](https://ilgmforum.com/t/rh-and-temp-question/14702/1 "2017-08-25T15:11:19Z")
Good Morning Everyone, I received my seeds in the mail and I am getting ready to start my grow. Just doing a dry run to see baseline temps this is what I have…66% RH with a 24 hour low of 65% and a high of 78% (the high is before I had the exhaust running) and the temp is 73 with a 24 hour low of 68 and high of 73. I believe the temp is fine but the RH is a high. I have a grow room that is 32"x32"x63". I have a carbon filter and a 6" inline fan exhausting out of the top. Right now I am using a passive air intake with the rectangle intake vent open at the bottom to let air in. If i add an intake fan will that decrease the humidity or is a de-humidifier a better bet? 2)Also, when I put my hand near the intake vent I can feel a slight breeze of air going into the tent because of negative pressure, will this flow of air be enough to strengthen the stems of the plants or should I also get a small clip on fan as well? You guys are awesome! ---
**Author:** ![Majiktoker](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/majiktoker/32/80701_2.png) [@Majiktoker](https://ilgmforum.com/u/Majiktoker)\ **Post date:** [August 25, 2017, 3:29pm UTC](https://ilgmforum.com/t/rh-and-temp-question/14702/2 "2017-08-25T15:29:43Z")
If they are seedlings the humidity is fine where its at ---
**Author:** ![dmykins](https://avatars.discourse-cdn.com/v4/letter/d/a6a055/32.png) [@dmykins](https://ilgmforum.com/u/dmykins)\ **Post date:** [August 25, 2017, 3:50pm UTC](https://ilgmforum.com/t/rh-and-temp-question/14702/3 "2017-08-25T15:50:12Z")
@Majiktoker Yes they will be seedlings, at what point will I have to bring the humidity down? ---
**Author:** ![Hogmaster](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/hogmaster/32/619897_2.png) [@Hogmaster](https://ilgmforum.com/u/Hogmaster)\ **Post date:** [August 25, 2017, 3:59pm UTC](https://ilgmforum.com/t/rh-and-temp-question/14702/4 "2017-08-25T15:59:46Z")
Late veg early flower During seedlings stage 50%-80% humidity Veg 40%-60% Flower 30%-40-45% tops Hope this helps ---
**Author:** ![Oak](https://avatars.discourse-cdn.com/v4/letter/o/bc79bd/32.png) [@Oak](https://ilgmforum.com/u/Oak)\ **Post date:** [August 25, 2017, 7:10pm UTC](https://ilgmforum.com/t/rh-and-temp-question/14702/5 "2017-08-25T19:10:09Z")
and yes. get a small clip on fan to circulate more air. ---
**Author:** ![Countryboyjvd1971](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/countryboyjvd1971/32/102222_2.png) [@Countryboyjvd1971](https://ilgmforum.com/u/Countryboyjvd1971)\ **Post date:** [August 25, 2017, 7:22pm UTC](https://ilgmforum.com/t/rh-and-temp-question/14702/6 "2017-08-25T19:22:05Z")
I will not decrease humidity per day I may lower humidity in tent if grow room humidity is lower But air flow will prevent mold in humid conditions mold forms when moisture is allowed to sit on a give place long enough time a warm moist environment So it will help some if you use a intake fan but grow room or space tent is located should be maintained at a proper rh and temp Allowing exhaust or intake fan to pull that air into tent @Majiktoker & @Hogmaster both make good points Happy growing 🤠 ✌ CB ---
**Author:** ![dmykins](https://avatars.discourse-cdn.com/v4/letter/d/a6a055/32.png) [@dmykins](https://ilgmforum.com/u/dmykins)\ **Post date:** [August 25, 2017, 7:40pm UTC](https://ilgmforum.com/t/rh-and-temp-question/14702/7 "2017-08-25T19:40:36Z")
Perfect. I haven’t used an active intake fan, just passive intake from the exhaust fan/filter. I’ll grab a couple clip on fans. In essence even if it’s humid in there, keeping the air moving will protect the plants?