better off buyin it in bulk in uk......
much cheaper than buyin a bottle or 2 every week imo
loads of places in uk will post over for cheap and give bulk discount
mostly lucas though...
I did a bit a research there!
You could get NF in from a UK supplier but your would only save about 1.20 a bottle! thats 40cent per fill! and that when buying 16 bottles at a time (48 tanks worth)
Or else just buy from a isdc club trader
If your stuck I can spare a bottle!
Dan