n0tmycupoftea
Well-Known Member
When I started my micro grow I thought that more exhaust/intake fans with huge CFM values would do the trick. During my first grow I did lots of tweaking and adding more fans was not the trick. After my first grow I found out that placement is the key. You first need to find out where your hot spots are in your grow box.
My friends have done this by using a heat spot gun (forgot the correct terminology for it), but I did this by just having the lights running and feeling around with my hand where there was a noticeable difference in heat and then placing my fans there as an exhaust. Your exhaust fans are going to be the most important in your micro grow. Just because you have exhaust fans near your lights doesn't necessarily mean that it's dissipating all the hot air; you have to find those hot spots.
Your intake fans can be placed anywhere near the bottom of the case where the air is cooler. By properly placing my exhaust fans where they needed to be I was able to drop my temperature from 104 with lights running and no A/C in the house on a 104 degree day outside down to 88 and all I have are 3 fans all together (two 80mm exhaust fans at 35CFM a piece and one 120mm intake fan at ~68CFM) with 4 26w bulbs in a 16" H x 16" L x 7" W case. At one time I've had my case riddled with holes and openings with 6 fans going and was still running temps around 96-100 prior to properly placing my exhaust fans.
Taking a look at your light placement Flaming Pie may be right by just venting the hot air from above your case. So place your strongest fan at the top of your case right in the middle as your exhaust and have two intakes on the bottom or vice versa... two exhausts and one intake like me.
In addition to that, adding a small cup of water can also reduce heat but only by a smidge and you have to constantly keep refilling it.
Hope everything goes well with your grow, I'll be subbed
My friends have done this by using a heat spot gun (forgot the correct terminology for it), but I did this by just having the lights running and feeling around with my hand where there was a noticeable difference in heat and then placing my fans there as an exhaust. Your exhaust fans are going to be the most important in your micro grow. Just because you have exhaust fans near your lights doesn't necessarily mean that it's dissipating all the hot air; you have to find those hot spots.
Your intake fans can be placed anywhere near the bottom of the case where the air is cooler. By properly placing my exhaust fans where they needed to be I was able to drop my temperature from 104 with lights running and no A/C in the house on a 104 degree day outside down to 88 and all I have are 3 fans all together (two 80mm exhaust fans at 35CFM a piece and one 120mm intake fan at ~68CFM) with 4 26w bulbs in a 16" H x 16" L x 7" W case. At one time I've had my case riddled with holes and openings with 6 fans going and was still running temps around 96-100 prior to properly placing my exhaust fans.
Taking a look at your light placement Flaming Pie may be right by just venting the hot air from above your case. So place your strongest fan at the top of your case right in the middle as your exhaust and have two intakes on the bottom or vice versa... two exhausts and one intake like me.
In addition to that, adding a small cup of water can also reduce heat but only by a smidge and you have to constantly keep refilling it.
Hope everything goes well with your grow, I'll be subbed
