No pude hacer un lavado de raíces y solo dejé de fertilizar y apliqué un final flush

flushing at end of harvest is "bro science" -- it's mostly been debunked at this point. So, i wouldn't buy a "flushing agent" as those aren't useful either. Plain water run through a substrate and allowed to runoff will be just as effective. Simply measure EC as it goes and you can stop at same point if you still want to do it. Not telling you not to.. just saying that all the claims as to why it was done turned out to be false once it was tested. (e.g. flushing does not reduce minerals in your buds... 100% false, but was used as a "scienc-y reason" despite never being tested.. huge red flag in regard to deductive reasoning skills :P ) impossible to guage from these pictures... I u se three things to determine harvest... Trichomes coloration (need a 30x or greater magnification) pistil coloration, which also tied in with if they are coiled up or standing up straight etc... density There is pesonal preference involved too.. some like early harvests, some like late and everything between.... so.. you'll have to decide the finer points for yourself. 5-10% amber is generally thought of as early window harvest... some ppl really like it ambered up and wait for damn near 100%... so... just depends. like the flushing, i'd see for yourself before assimilating beliefs.