I'm planning the ventilation for my 3x3 or 4x4 grow tent. I am going to use a 6" inline fan to scrub the air, cool a 600w light and exhaust the room (through a window outside), and rely on passive intakes.
I am a little concerned with noise so I have an idea I would like to run by you guys. I am going to use flexible ducting inside the tent, but instead of using flex ducting to go from the tent to the window (only 2-3feet) I am thinking about using a piece of 6" solid metal ducting lined with 1/2" acoustic foam. It would basically be a duct muffler, but it would be the entirety of my out of tent ducting. Is this a good idea? Would it cut back on the noise? Would it restrict air flow to much? If so I was thinking I could use a 8" solid duct with reducers on each end lined with 1" acoustic foam. This would give a full 6" of airflow as apposed to 5" with the first approach.
My second question is regarding the order of ventilation components. Originally My plan was to do it like this: carbon filter-> inline fan-> light-> exit tent and outside. This would put the inline fan in the middle of the chain.
From what I have read, ideally you want the inline fan to be at the end of the chain, pulling air through the system. I could set it up that way: carbon filter-> light-> inline fan-> exit out of tent, but this set up would require an extra 90 degree turn in the flexible ducting. which approach would be better? Or with the extra turn would it be about the same either way? A possible benifit of setting it up the second way is that I could attach the inline fan directly to my DIY muffler/solid duct, and it seems like that might reduce the sound of the inline even more, but I am not sure.
I am a little concerned with noise so I have an idea I would like to run by you guys. I am going to use flexible ducting inside the tent, but instead of using flex ducting to go from the tent to the window (only 2-3feet) I am thinking about using a piece of 6" solid metal ducting lined with 1/2" acoustic foam. It would basically be a duct muffler, but it would be the entirety of my out of tent ducting. Is this a good idea? Would it cut back on the noise? Would it restrict air flow to much? If so I was thinking I could use a 8" solid duct with reducers on each end lined with 1" acoustic foam. This would give a full 6" of airflow as apposed to 5" with the first approach.
My second question is regarding the order of ventilation components. Originally My plan was to do it like this: carbon filter-> inline fan-> light-> exit tent and outside. This would put the inline fan in the middle of the chain.
From what I have read, ideally you want the inline fan to be at the end of the chain, pulling air through the system. I could set it up that way: carbon filter-> light-> inline fan-> exit out of tent, but this set up would require an extra 90 degree turn in the flexible ducting. which approach would be better? Or with the extra turn would it be about the same either way? A possible benifit of setting it up the second way is that I could attach the inline fan directly to my DIY muffler/solid duct, and it seems like that might reduce the sound of the inline even more, but I am not sure.
