Yeah a lot of those symptoms are here. The claw big time), dark green, snappy stems (noticed one leaf broke on its own at stem base) and shotty roots are a few of the bigger ones. We’re probably going to flush and reset w/much less N.
What would you do? What ec do most people run in rdwc?
I would flush the system and start over. Check the calibration on your meters also. Here is an article on EC, it has a chart to show EC by stage of growth.
Thank you guys! We ended up doing about a 3hr flush while mixing new nutes. Reset tanks at lowest nute level Ec of 0.95. Been creeping it up and now at 1.2ec (a touch heavier on bloom A to keep the N down a tad as the bloom B is a lot of N).
Still looks a little shitty and stunted but at lights on hopefully they are a little happier.
@Slym3r cropsalts recommended ec is 1.5 (do you think we should aim for there?). We’ve read about dwc being more efficient with the nutes (not sure how true but kinda makes sense maybe). We’ve also read about sativas feeding lighter than indicas (again kinda makes sense but not sure). Thank you for the charts!
@nacho151 Thank you! That artical looks good! I lightly skimmed it but during lunch I plan on diving in.
I ran crop salts in the autopots, and was actually running two levels above what they give as the recommended for I guess “normal” feeding plants? Anyway mine ate all that up and I also top fed with OA nutrients and they ate every bit of it and were still a bit light colored. I never checked the EC on both and then averaged it, but it was probably around 2.5-2.6 EC.
I would just run the recipe until i got the hang of the system. Really there is no wrong recipe, if you can maintain it with all the many variables that may come into play. Once you have it down then make tweaks you may want to make. Or not. You may like your outputs. Lots of factors. Genetics, environmental, and alot of the time human errors. Just keep growing. No matter what and you’ll be great at it.
EC is relative to growth conditions, In commercial grows they will push all the way to 4.0+ by adding CO2 and intense lighting etc. I use Jacks with some supplemental CO2, under normal recommend mix concentrations my EC is typically between 1.97 - 2.01, my last few grows I was able to push by +50% to bring my EC to around 2.97. the buds were more dense and they seem to have mature faster IMHO.
