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Frosty_farm started grow question 3 years ago
What is the limits ( humidity and temperatures) for my auto white widow?
white widow auto first grow
16 weeks
white widow auto first grow Frosty_farm
Auto White Widow
27 comments · 3 years ago
Week 2
Leaves. Color - Dark-brown
OutForReal answered grow question 3 years ago
Hello ! Well at that stage your humidity can be around 70% (even 80 for a seedling or young three ) so yours are a bit too low for that stage but 56% is perfect in early mid flowering but will need to get as low as 30% for the last flowering weeks. Your temperatures are a bit low but 24°C is still managable for a whole grow cycle but you night temperature must be lower so be carrreful about the gap between day temps and night temps . Don't worry about having a carbon filter or not , it's nothing that helping the plant to grow it just hide the plants odors / smell so it can't slow your grow. Be careful about the wet/dry of your soil , don't let it be moist in continue, allow it to dry a bit before you water it again. About your LST it's too late if you wanna bend your main stem but wait about 2 weeks and I think it will be possible. I hope it will help you :grin::+1:
HighTV answered grow question 3 years ago
Hey there Jaggie! Optimal temps Veg: 70-85f Flowering: 65-80f | Optimal humidity for Veg: 40-60% Flowering: 40-50%. I will not go into those base temps/RH levels as others have already. A good thing to mention is that the optimal temps change based on your humidity level and vise versa, because temperature of the air effects its ability to retain water. Your plants breathe through openings in the bottom of their leaves called stomata. Stomata inhale C02 and exhale oxygen+moisture. The pressure difference between the inside of your plants and their outside atmospheric environment impacts the rate at which your plants transpire moisture into the air. A high VPD (Vapor pressure deficit) means the air in the tent can hold much more water (RH is low!) and this causes the plants to transpire more water into the air through its stomata. A low VPD means the air has nearly reached moisture saturation and the plant will not transpire much. Both a High and Low VPD can cause problems!

Here is a graph with Temp/Humidity relationship levels. Get as close as you can to the target temp & Humidity then refer to this chart for optimization based on your situation. BEST OF LUCK! :sunglasses:
thegreatdeadpoolio answered grow question 3 years ago
hey dude! The previous answers are spot on about ideal conditions, however do remember to not ruin the fun of growing trying to make ideal conditions. I run my entire grows at 40-50% humidity and have yet to run into issues.

As far as temps go since I see you are running LED research has shown that temps kept closer to 80F/25C allow the plant to better use the light.
Stick answered grow question 3 years ago
Hi @Jaggie1983! Seedling stage : 65-70 % RH & 20-25 C°. Vegetative stage: 40-70 % RH & 22-28 C°. Flowering stage: 40-50 % RH & 20-26 C°. Hope this will help, keep us up-to-date and happy growing :facepunch: