thanks for the replies guys,
I used one drop per 330ml bottle,
thanks triplehazard, i think once i use up this next pack of drops ill use regular sugar, although i havent had a problem before with the drops,
I have been doing some reading and another brewer mentions that if you leave the beer in the fermenter for 3 weeks or more like i did, it will take a long time for the beer to carbonate as most of the yeast has dropped down to the bottom,
So im thinking i might just bottle my beers after 2 weeks from now on.