Hi there, and thanks for the reply.

To be honest the house is a very very warm house even on cold nights even without the gas on, but as I said I just popped up the other day and it was during the day and it was cold, as like as if was out on the street.

At the min all I have is a light bulb in my attic but I priced some flooring and a ladder and I'm going to get the chap to put some electrics up there too as in sockets.

The set up is costing me in the region of â?¬600, that's according to my local grow shop.
That is for a tent that the guy tells me "should" hold 4 plants. 2 side reflectors, which I don't know what is for really (noob here ) the balast and a 600w light.

I'm also worried about the smell but I see extracor fans are very expensive so would just a normal fan be sufficent with some duct leading to the vent in the attic ?

To me this seems quite daunting but I feel I have to do it as I've been putting it off some years now and being paying out crazy cash for scabby deals.
I just don't want to fork out the cash and make a total bags of it and wasted the cash which is hard to come by.

Cheers again for the reply