This is a repost from general growing questions, didn't receive much feedback..so I'll ask the indoor crew (was meaning to spend more time here anyhow!)

I usually give them the higher PPM towards the end of the run... in the last three weeks I use my regular flowering nutes as well as "Shoot Powder" which is real high in P to finish em up and then flush them out.

I have a friend who told me he hits his peak PPM around five weeks, and then lowers it gradually and finishes in 8.5 weeks.

Am I doing it incorrectly by raising my PPM and blasting them at the end before the flush? I am working with SunShine#4 and Super Natural blooming nutes. I always let the leaves yellow before flushing.
razzapiggy Reviewed by razzapiggy on . When do hit max PPM? This is a repost from general growing questions, didn't receive much feedback..so I'll ask the indoor crew (was meaning to spend more time here anyhow!) I usually give them the higher PPM towards the end of the run... in the last three weeks I use my regular flowering nutes as well as "Shoot Powder" which is real high in P to finish em up and then flush them out. I have a friend who told me he hits his peak PPM around five weeks, and then lowers it gradually and finishes in 8.5 weeks. Rating: 5