when to start rinsing

ok first of all go look were you got the seeds from and see how long it says flower is for. its not 100% but its a good base line, probably 8 or 9 weeks of flower is around the normal some can go longer. you can keep an eye on the trichnome "the thc" you want about 75% of the thc to be a milky white or amber colour bro. also you are growing in soil? this takes a touch longer to flush then hydroponics. normaly about 2 weeks flush. start with pushing about 25 to 45 litres of clean ph water through your pots then leave for a couple days after drain then just plain ph water till you hit that magic 2 week. nice looking grow congrats :)