Questions before flowering

Samanosuke82 said:

What's up peeps, I got a few questions that I hope y'all can answer. I am growing in a 3x3 vivosun tent.
1. What temp and humidity should I keep throughout flower?
2.is a 4inch exhaust fan good enough,or should I go to 6inch (I have one available)
3.should I reposition my fans. The two at the bottom are standard clip-ons,fan on the top-right is a vivosun oscillating fan.
4. I have an Ir gun,should I factor my leaf temps into my environment.

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twentyeight.threefive said:

1) Assuming with LED light? 80 to low 80s are good with less than 50% RH.

2) Depends on the CFM rating of your fan. Base CFM for 3x3x6 tent is 54 CFM. You have to account for exhaust filter, number of bends in exhaust duct and length of exhaust duct. Each factor will require a higher total CFM.

There's a great write up on calculating your requirements here: https://www.acinfinity.com/pages/technical-guides/grow-tent-ventilation-guide.html

3) I try to keep a constant canopy breeze going. Some movement below doesn't hurt either.

4) If you'd like. With LED lighting surface leaf temperature is lower than ambient air temperature which is why 80 to low 80s ambient air temperature is a good range to be at.

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hotrodharley said:

4” should be fine. If under LED use those temperature guidelines. Humidity below 50% if possible. Especially in later stages of flowering. Yes use the IR to check. 82F at canopy level.

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