sarshul
the best place to get nutes would be somewhere like the new age shop in tallaght village, i would suggest you use something like a bottle of bio bizz grow then when plants are in flower use bio bizz bloom, great stuff and easier to measure than stuff in b and q which is like one cap to forty gallons. lol.
irishmc
if you are having a problem with the clod you need to put the plant in a small wooden box, dont worry about ventelation, they will be fine that small, make sure the light is 1 to 2 inches above the plant no more, no nutes!. i made a box and had a large sheet wrapped all around it to keep heat in, in a confines area a 125w cfl will produce enough heat even in this weather!
blazed
what light are you using and how far from the plant is it, if cfl keep near and when the plants are young i found they dont need loads of ventelation, i only opened a closed cupboard once a day, it keeps the heat and moisture up a bit which the plants like when young, dont have them in too much of a large area, a smaller box is a much better medium when the plants are young because its easier to manage. you can move the plants when they get a bit older and stronger.
you guys dont have to take any of my advise as im only on my first grow but likes lots of other guys i have learned what works and what doesnt, plus read lots and lots of books.
good luck lads
lu