That shouldn't be a problem, we can return/exchange the 400 cfm. We bought that when we were going to do a single hps. What 600cfm do you use? I will look into the clip lights. We are getting 2 already for the veg stations. Going smaller isn't a problem on the fan.
Live near Plymouth. Ann Arbor is one of my favorite places.
I personally use canfan. I have two of them, one 6" canfan and one 8" maxfan pro.
The 6" is around 650cfm if I recall correctly, and the 8" is 860ish cfm, with built in speed controller. They are expensive, but worth it in my opinion. I have had my 8" running all day every day for over two years, it has only has a 30 day break.
During that 30 days I bought an air handler squirrel cage fan and set it up, this thing was supposed to move 1500cfms. It lasted one month, then died, and my power bill that month was double what it should have been, so the blower was pulling over 2000w continuously somehow... Also, the maxfan has much better static pressure than the squirrel cage, and can pull through the blower and against resistance much better. You need static pressure to pull through the carbon filter.
Needless to say, I'm back to using the maxfan that I never should've switched away from. My airflow is actually better with the lower cfm blower, because it has much higher static pressure.
If you use a canfan 6" (you can get the pro with the speed controller so you don't have to purchase a separate controller) then you could pair it with a can filter 50. That should do it for air ventilation and filtering. Then the little oscillators for moving air around canopy and you're set.
As far as carbon filters go, I like to get the heaviest filter for its size. You can go to the store and see that two different filters of the same size are two different weights. You are paying for a metal drum packed with activated carbon, it would behoove you to get the most carbon
that is why I recommend can filters, they're solid.
I looked up the carbon filter you mentioned, it is only 16.1lbs.
ipower
Can filter
The can filter 50 is over 50lbs, and much thicker. Similar height, can filter is twice as thick and over double the weight They're both made of aluminum. the ipower carbon filter is 8" but doesn't mention how many max cfm for scrubbing or exhaust, but I'm thinking you would need a grossly underpowered fan for the ipower filters, there's not enough carbon for it to effectively scrub at too high of a cfm...
Plymouth. I used to live in Royal Oak, Northville, Livonia, Redford... Now I'm out in the sticks, near i96 and us23! What are the chances that I choose to stick in this thread and try to help out and we end up living 20min away from each other? Crazy small world...
Let me know if you or hubby have any more questions!