Urban redecoration! Input on some ventilation por favor!

Hello y'all!


I have been pondering this setup for quite some time, and is starting to puzzle the pieces.
After reading up on ventilation I found myself a little short of expertise, so to speak.
If anyone out there want to come to my humble setup rescue and look over the number, I would be much obliged!


This is where I'm at:


Growroom!-!


2.5m * 4m * 2m


10m2
20m3


Starting with 4* Gavita PRO 1000 DE EU
http://www.gavita-holland.com/index.php/products/gavita-power-line-high-performance-lighting/item/gavita-pro-1000-de-eu.html
" * room for upgrades = 2 extra PRO 1000 and 2 Gavita PRO LEP EU
( http://www.gavita-holland.com/index.php/products/gavita-power-line-high-performance-lighting/item/gavita-pro-300-lep-eu.html ) "




Correct me if I am mistaken, but could my ventilation calculation be something like this:


20m3 * 60min = 1200m3/hr <- this is what I need to replentish the room completely every minute without any filters or other
interferrences.
I have read that it's "recommended" to replentish the room every 2-3 minutes or so.


If so I take in to calculation of
8 1000w with a boost capasity up to 1200w (15% for each 1000W)
1 filter (20%)
10% for extra juice
0% for ambient temperature = aircon


I found this guide for ventilation, which is in cfm, so I was not sure if the calculation would work with m3, prolly not.
http://www.bghydro.com/bgh/static/articles/0606_vent.asp


After converting my m3 to cf and adding the % I arrive at 587cfm minimum exhaust fan needed.
Does this make sense ?


If so, I was thinking of running this fan:
Manrose MAN280M
http://www.manrose.co.uk/specifications/maninlinecentrifugalfans.pdf


with this filter:
Phresh 1000m3
http://www.tienda.2odd.es/index.php?id_product=52&controller=product <- cm/m3
http://www.phreshfilter.com/about/size-selector.aspx <- inch/cfm

I know that the fan is a tad over the recommended "maximum" from Phresh side, but I could always trim it down.


I would love to get your two cents on the matter!

Sounds good! I'm not following on how the 1200m3/hr turned into only 587cfm required but it should work anyways. Dial down the fan to make the filter work better you are right! If you have a/c to control heat and are thinking of using co2 you want less airflow anyways.
I'd love to get two of the Gavita LEP or any manufacturers LEP product for that matter.

Thanks J420, ye, I kind of jumped between the sticks, m3 and cfm some. Got myself confused in the process
Plasma looks to be the absolutely shiiiiat when it comes to veg building, Gavita's top model is starting on nearly 1100&#8364; in Spain, tho.

Ya the Gavita is a bit more here and hard to find, Chameleon grow systems makes a couple plasma lights that are a little more cost effective but still too much for me. I'd even use it for flower with a smaller hps to supplement.

Looking at the par reading, I actually find little need for a HPS to even supplementing this rack: