S420 Posted December 12, 2018 Author Share Posted December 12, 2018 35 minutes ago, greenkush said: Mind linking it here please https://www.takealot.com/russell-hobbs-10000btu-portable-aircon/PLID41125397 here are pics of the setup in my tent 1 Quote Link to comment Share on other sites More sharing options...
Dope Posted December 13, 2018 Share Posted December 13, 2018 I bought that exact unit and used it for 3 days and never again. I opted for a wall unit instead and now get a steady 25 degrees. Thats what you want. Quote Link to comment Share on other sites More sharing options...
greenkush Posted December 13, 2018 Share Posted December 13, 2018 1 hour ago, Dope said: I bought that exact unit and used it for 3 days and never again. I opted for a wall unit instead and now get a steady 25 degrees. Thats what you want. Not everyone can go bashing holes into walls to install an aircon for a grow tent, those portable units work perfectly fine. I use one in my house and it keeps it cool. 1 Quote Link to comment Share on other sites More sharing options...
S420 Posted December 14, 2018 Author Share Posted December 14, 2018 15 hours ago, greenkush said: Not everyone can go bashing holes into walls to install an aircon for a grow tent, those portable units work perfectly fine. I use one in my house and it keeps it cool. Making a hole in the wall aint an option for me either. They do work really good in tents Quote Link to comment Share on other sites More sharing options...
Dabtzar Posted December 23, 2018 Share Posted December 23, 2018 You can't happily grow above 24/25 without the use of Co2, and then a portable AC unit is no good. Temps that high will leave your bud less terpy due to high temps.Sent from my EVA-L09 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Budwizer Posted February 21, 2019 Share Posted February 21, 2019 On 12/23/2018 at 6:22 AM, Dabtzar said: You can't happily grow above 24/25 without the use of Co2, and then a portable AC unit is no good. Temps that high will leave your bud less terpy due to high temps. Sent from my EVA-L09 using Tapatalk This is true for HPS. New lighting tech is changing the game. Controlling ambient temperature for the sake of it is misguided. You need to achieve the correct Leaf Surface Temperature, for optimum photosynthesis and transpiration. The correct ambient temperature for HPS, cannot be the correct ambient temperature for LED. Without the massive amounts of infrared wavelengths, HPS produce, LED lights need higher ambient temperature, to compensate for the cooling effect of evaporation, from transpiration. Point is, with new lighting technologies, you need to measure the LST ( cheap infrared laser thermometer) and adjust your ambient, to achieve an LST of 25/26 C. FYI: Set emissivity to 0.98 on your laser thermometer, for green foliage. 4 Quote Link to comment Share on other sites More sharing options...
greenkush Posted February 22, 2019 Share Posted February 22, 2019 @Budwizer What LED lights are you running? Quote Link to comment Share on other sites More sharing options...
Budwizer Posted February 22, 2019 Share Posted February 22, 2019 Sanlight S4W Quote Link to comment Share on other sites More sharing options...
greenkush Posted February 22, 2019 Share Posted February 22, 2019 30 minutes ago, Budwizer said: Sanlight S4W Ah okay thanks Quote Link to comment Share on other sites More sharing options...
biird Posted September 4, 2020 Share Posted September 4, 2020 On 2/21/2019 at 9:22 PM, Budwizer said: This is true for HPS. New lighting tech is changing the game. Controlling ambient temperature for the sake of it is misguided. You need to achieve the correct Leaf Surface Temperature, for optimum photosynthesis and transpiration. The correct ambient temperature for HPS, cannot be the correct ambient temperature for LED. Without the massive amounts of infrared wavelengths, HPS produce, LED lights need higher ambient temperature, to compensate for the cooling effect of evaporation, from transpiration. Point is, with new lighting technologies, you need to measure the LST ( cheap infrared laser thermometer) and adjust your ambient, to achieve an LST of 25/26 C. FYI: Set emissivity to 0.98 on your laser thermometer, for green foliage. This comment should get an award. @Budwizer for president Quote Link to comment Share on other sites More sharing options...
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