Congratulations! 200 stones on your first flush! That is a roaring success! seriously well done mate.
re 3rd drink of grapefruit/OO; must say i don't know about that, but for your first flush i would not. 200 stones is an excellent start, you should be satisfied with that. You cannot get them all out quickly, doesn;t matter how "hard" you flush. i have flushed 8 times this year, mostly the Turbo flush, and only after the 8th flush have i started feeling any benefits. I estimate i have at least 5 more to go, but prob another 8.
from what i've read the "average" person needs to get out about 2,000 stones before they are stone free. 3 flushes in a row with zero stones indicates you have got them all out.