after 5 harvest i'm still struggling to get 2#s per 1k. the most i've gotten is 7# 10oz off of 4 1k. i know it's not easy but would like to get some advice from OGs that have accomplish it. i'm currently doing 9 5gal RDWC under 1k. Strain is GDP, for my base nutes i'm using Super Nutrients. For my additives i'm using cal mag, root excel, AN bigbud, AN overdrive, and cannazyme. also using RO water. during veg i top them once and then do a lot of lst. they usually end up with 2-5 tops going into flower. i'm thinking i should top them 2 or 3 more time on my next run. well hopefully that's enough info. please let me know what you think. thanks in advance!!