12 inch extractor fan to 8 inch reducer ?

White Warg · 10-01-16, 12:57 PM

Blimey 3600 wattage of light. I am insanely jealous.

**sid2444** · 10-01-16, 01:08 PM

great advice thanks i will look at them rvk now cheers

**British green** · 10-01-16, 01:08 PM

Personally for ten plants the light is over kill . Three 600watts and you'll still be over killing it

white warg is spot on with the fan advice

**sid2444** · 10-01-16, 01:16 PM

thanks this is the stuff i need to know

**sid2444** · 10-01-16, 02:33 PM

just looking at the 12 inch rvk there are 2, one is a 1300 m3 and the other 1800 m3 which one do i need with a filter on reducing air flow a bit for my size room ?

White Warg · 10-01-16, 02:42 PM

Providing you can afford it, the Large version will always be better, especially if you're dialling it down on a controller.

Also look to get a variac controller. Look at Bud Lightyear's DIY thread on them if only for info. You don't want fan hum.

(I use a 5-step controller from Ebay, £50 but I have it wired to a 2-plug extension so it can run two fans simultaneously.

**exodus luton chedder** · 01-08-16, 06:23 AM

I use 12" airforce 2 exhaust and 8" rvk inintake bottom corner exhaust oposite top corner in veg but flower to drop humidity extra bit and switch 2 of my 10 x 600w hps bulbs down to 250 but vertical cfls also and my temp can be 30ºc in veg but get it back down to 26-27ºc in flower and I always hang 4 bags of co2 bags up really high and have small osculating fans on floor pointing upwards ' hope this helps .

**exodus luton chedder** · 01-08-16, 06:26 AM

Hr should be fine aslong as he vegs for about 8 week haha top top and lollypop;-)

**M_C** · 01-08-16, 11:27 AM

Originally Posted by exodus luton chedder

and switch 2 of my 10 x 600w hps bulbs down to 250

6,000w seems a little overkill for percy...!

**ciderboy** · 01-08-16, 11:49 AM

I use a 12 inch fan and reduced to 10 inch for the chimney stack, only down side is when on full blast you can see it sucking the life out of the ducting between the filter and fan as its can't get the air out quick enough, I also used a traffic cone for my reducer , money saving tip right there , putting it to an 8 inch pipe you will not get the benifit of the fan due to restriction , 6,000w that's one light per plant , don't need that much buddy you enough to light Blackpool tower up

Sent from the cider groom