menoseloso
New member
Hi Red,
This is an invaluable thread. I remember reading something similar to it on OG a few years back. I'm trying to plan out my exhaust system for a future grow and would like some advice if you have the time.
I used to use a 4" vortex fan in a small closet grow with a 400w hps. I had it set up pretty well and kept the temps at a good level. Only problem was that the fan and the sound of the rushing air were far too obvious. This time, I would like to go for a much stealthier set up. I will be building a false wall to enclose a 8 foot by 4 foot grow room. On one side I will have a 3x4ft flowering room with 600 watts. I'm going to run an air cooled hood straight into the next room or into the attic. I have seen a lot of references to the S&P TD series fans. I understand the more static pressure, the lower the performance of the fan, but stealthiness is of the utmost importance. The lower power usage is nice as well.
What I am thinking is that I would use the 8" S&P TD-200 rated at 538cfm to cool my hood. It's going for the same price as the S&P PV-150x, which would be other option, and it would be a bit quieter. If I had a straight run from intake, through the hood, and out the exhaust, do you think this fan would maintain adequate temperatures? I would certainly use a smaller fan to do a proper air exchange in the flower room. I would like to keep the temps within about 5-8 degrees of ambient.
One other question, if I did go with the 8" fan and I decided to use a hood with 6" flanges, could I insert the six inch duct into an 8" duct running to the fan to cool the light and act as an exhaust for the room as well? The problem I'm running into is that buying an 8" cool hood is significantly increasing the cost of choosing this fan. Would drawing from a six inch air cooled hood while drawing from a 2 inch gap around the duct increase the static pressure to the point that the benefits of this fan are decreased?
I guess what I'm asking is what would you do?
Thanks for any input and I'm sorry about the long post!!
This is an invaluable thread. I remember reading something similar to it on OG a few years back. I'm trying to plan out my exhaust system for a future grow and would like some advice if you have the time.
I used to use a 4" vortex fan in a small closet grow with a 400w hps. I had it set up pretty well and kept the temps at a good level. Only problem was that the fan and the sound of the rushing air were far too obvious. This time, I would like to go for a much stealthier set up. I will be building a false wall to enclose a 8 foot by 4 foot grow room. On one side I will have a 3x4ft flowering room with 600 watts. I'm going to run an air cooled hood straight into the next room or into the attic. I have seen a lot of references to the S&P TD series fans. I understand the more static pressure, the lower the performance of the fan, but stealthiness is of the utmost importance. The lower power usage is nice as well.
What I am thinking is that I would use the 8" S&P TD-200 rated at 538cfm to cool my hood. It's going for the same price as the S&P PV-150x, which would be other option, and it would be a bit quieter. If I had a straight run from intake, through the hood, and out the exhaust, do you think this fan would maintain adequate temperatures? I would certainly use a smaller fan to do a proper air exchange in the flower room. I would like to keep the temps within about 5-8 degrees of ambient.
One other question, if I did go with the 8" fan and I decided to use a hood with 6" flanges, could I insert the six inch duct into an 8" duct running to the fan to cool the light and act as an exhaust for the room as well? The problem I'm running into is that buying an 8" cool hood is significantly increasing the cost of choosing this fan. Would drawing from a six inch air cooled hood while drawing from a 2 inch gap around the duct increase the static pressure to the point that the benefits of this fan are decreased?
I guess what I'm asking is what would you do?
Thanks for any input and I'm sorry about the long post!!