So we have a GG Photo grow going and it’s been going great so far. We’re at the 2nd week of flower from flip and it looks great. For the last 4 weeks I’ve been following the FF trio schedule as written. Schedule says I can feed up to twice per week which for the last 4 is what I’ve been doing. They look great with no issue, but the schedule during most of flower is anywhere from 2300 to 2520 ppm. I note that most posts I’ve read and articles say around 1600 is plenty of ppm, so I’m wondering if 2300 + is far too much nutrient for GG photos. The plants look fine although most everywhere I’ve read these girls are moderate on nutes, and 2300 + isn’t moderate from what I’ve read.
So before I get into lockout or some other nutrient issue on these girls, should I just bring the ppm down to 1500 to 1600 from here on out?
Also have read 2 competing theories on what happens when. you use sledgehammer which is the second question I have. Some folks speak of disaster in mid grow using sledgehammer and others say it works just fine. One theory on the disaster side I read is that the soil may have been saturated with nutes and the sledgehammer opened the root throttle wide open and they overfed the plants. The other complaint on this was they stripped all nutes and the plant suffered.
So for the last month I’ve been doing full FF nutes twice a week on GG and so far it looks good.
Any advice on which tact to take? Either just bringing down the nutes to 1600 max or flushing and immediately fertilize after to 1600? Seems like we’ve. been overfeeding according to most info I’ve read, just because FF wants to sell more nutes doesn’t mean I have to follow the ppm and schedule they put out.
Just don’t wanna shock and harm these plants and also don’t wanna get into trouble from over feeding.
I’ll measure runoff today and post. Thanks to anyone who has some advice.