Hi everyone! This is my first post on the path to a grow and I just hit a problem I can't sort out myself.
The problem is: What size fan should i use to move the heat off the lights via the ducting.
I am using an 8 x 8 - grow tent, for a vertical stadium grow.
- 2, 1000w hps 6" Cool Tubes
- 18ft of 6" duct tube which will suck cold air from outside over the bulbs.
- 6 elbows total in the line
The 6" moves 351cfm. The 8" moves 740cfm.
I am concerned that the 351cfm will be insufficient because the ducting has a mandatory: 6 bends.
#1 - Is a 6" inline fan @ 351cfm enough or should i get the 8" @ 740cfm?
#2 - Would a "duct splitter" be a better choice since it reduces the 90 turns to 2 for each light? But the intake is split and I was wondering if that would reduce the flow of air over the bulbs.
The TL;DR version:
- Fan size to use? 6" or 8".
- Duct split or not to split (6 elbows, or 2 elbows and a 2 Y-splitters)
- Length of ducting okay?
Ta for the assistance in advance!
The problem is: What size fan should i use to move the heat off the lights via the ducting.
I am using an 8 x 8 - grow tent, for a vertical stadium grow.
- 2, 1000w hps 6" Cool Tubes
- 18ft of 6" duct tube which will suck cold air from outside over the bulbs.
- 6 elbows total in the line
The 6" moves 351cfm. The 8" moves 740cfm.
I am concerned that the 351cfm will be insufficient because the ducting has a mandatory: 6 bends.
#1 - Is a 6" inline fan @ 351cfm enough or should i get the 8" @ 740cfm?
#2 - Would a "duct splitter" be a better choice since it reduces the 90 turns to 2 for each light? But the intake is split and I was wondering if that would reduce the flow of air over the bulbs.
The TL;DR version:
- Fan size to use? 6" or 8".
- Duct split or not to split (6 elbows, or 2 elbows and a 2 Y-splitters)
- Length of ducting okay?
Ta for the assistance in advance!