Excellent, got a good fan on now...and don't have to sweat it with the co2 lark. And on the other subject of roots were abouts in scotland do you know?, I've a son in Arkansas... yeah had to spread my seed across the pond lol stayed in the states for 7 month back in 2002..4 months over my welcome time....it was all that mexican food couldnt get enough of it....back to growing...keeping the nute res cold will be no probs..i'll have to stop it from freezing lol...cheer again bro and will keep you up to date..