yup.. LRs dont like alot of nutes...
I wait until the 5th or 6th set of leaves start showing, then introduce lowered dosages of nutes..Being as they pretty much go from seedling to flower, and kinda skip the veg stages, i use bloom nutes from around day 14...Males usually will show their sex on day 17, females around day 21..so the bloom nutes will be readily available as soon as they start flowering..
I use a 1/6th diluted solution of biobizz grow, a 1/4 bio bloom in 1L of mineral water..
I usually keep the bio grow nutes going til 40-45 days, then omit it from the mix and raise the % of bloom to 1/3 or 1/2 for the last coupla wks..flush with mineral water for final wk.
Heres a coupla pics of one of my LR2s 10days ago, still got another 14ish days to go(til 60 days) prolly gonna leave harvest to 65days..they fattened up alot since these pics, theres a rough Oz on there now