quick q on agent orange

I've got one going right now in a gh waterfarm, its lovely at day 36, just one question though i know it fills out late, but right now its got me a little worried, i suppose thats also in part to the fact that im growing it under LED's and ive grown with them before but its just very disconcerting to be at day 36 and only have tiny little fluff balls for nugs lol. Anyways question was about what day does it start to put on the weight, i cant seem to find a definitive answer.

Thanks in advance, i know this is going to be absolutely delicious it smells so damn good, and man FROSTILICUS lol jesus its frosty cant wait for finished nug.