Aqua Man
- Posts
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- Joined
- Jun 12, 2018
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Yeah in a sealed setup you need AC and dehumidification. It's a must.
Control just arrived, anything else needed to enrich my space?With bottled I don't feel like you need to vent. If you want to it won't hurt to vent at night and that's plenty
I have a humidifier, I dont think I'll need ac/heating. I only grow during the winter and even when I ran my 1000 watt hps the hottest it got was 78°. I've been reading that humidity goes up with the use of co2 and a dehuy may come in handyHave a dehuy, ac, heater and humidifier?
So for guys with limited ceiling height,MH or hps is a better choice.IDK prolly 2 feet or so, I go by lumens so right now there getting around 30k @ i would say 2 feet with 50-75% intensity, hard to say with these fuckin mars lights..
So for guys with limited ceiling height,MH or hps is a better choice.
I thought hlg said their 100w could be 1 ft in flower. Hope I didn't get that wrong before I bought.I don't care??
Run whatever you want?
Led generally has lower IR and in turn leaf temps will be lower. Ideal leaf temps for optimal photosynthetic rates are around 75-77f. So generally room temps if around 80-82f are likely to put leafs temps in this range.Maybe someone can answer this question. I see a lot of people saying 80° is good for led, anything wrong with lower temps? Any negative effects from being in the low to mid 70's?
Where did you get the 75-77 number? That was what I'd had in my head as well, but I saw this paper from Black Dog LED where they made an assumption that you want LST at around 87! And I have seen this a couple other places too. I am currently sitting at about 80 for the tops of my plants (except one head that is higher and at 84 according to my IR gun).Led generally has lower IR and in turn leaf temps will be lower. Ideal leaf temps for optimal photosynthetic rates are around 75-77f. So generally room temps if around 80-82f are likely to put leafs temps in this range.
Leaf temps are more important than room temps
Your talking about with CO2. I got it from many studies I have read over the years.Where did you get the 75-77 number? That was what I'd had in my head as well, but I saw this paper from Black Dog LED where they made an assumption that you want LST at around 87! And I have seen this a couple other places too. I am currently sitting at about 80 for the tops of my plants (except one head that is higher and at 84 according to my IR gun).
Not trying to challenge you, just trying to sort out my sources here.
Ah okay, I must have missed that with the Black Dog study. Thank you.Your talking about with CO2. I got it from many studies I have read over the years.
They also note that leaf temps are higher than ambient temps... I just don't see this being possible in almost all cases. I think there was lack of account for wind and transpiration.Ah okay, I must have missed that with the Black Dog study. Thank you.
So they were measuring ambient temp throughout the room, not the air right next to the plant. Hence why the temp was higher. Obviously the lights provide measurement problems for ambient air temp measurement, so what they did makes sense.They also note that leaf temps are higher than ambient temps... I just don't see this being possible in almost all cases. I think there was lack of account for wind and transpiration.
Look at the last post it clearly shows he is 6-8f cooler than air temps and in blackdogs study under led they are much higher than ambient temps. Which lines up with my experience and many other studies I have read
I never really counted that study as accurate and I never dug into what may have been the difference.
Ahh I see now.So they were measuring ambient temp throughout the room, not the air right next to the plant. Hence why the temp was higher. Obviously the lights provide measurement problems for ambient air temp measurement, so what they did makes sense.
Or am I just totally off on what you are thinking about here.
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