This is what you'll hear all over the net. For DWC/NFT/SWC and any other method where the roots are directly in the res or nute solution... This is incorrect information.
When you compare this vs. starting at 5.2 and allowing the pH swing up to 6.0 or 6.1 before dropping back down... you'll see shorter, stockier plants that yield more and are slightly more potent.
5.8.6.2 is better for drip through a medium like rockwool or clay pebbles, perlite, coco... that kind of stuff. You get the pH swing in reverse as the medium dries out and the nute concentration goes up... pushing the pH down.
In DWC you need to allow the pH swing to happen in the res over the course of a few days.
Keep it Clean!
When your ph goes up do you put in ph down or do you change the water? My ph has been going up it went from 6.4 to 6.6
There... fixed that for ya.Not according to my <strike>techniques</strike> Experience.
This is going to come down to the nutrient profile you're using... most likely.
Some nutrients are so out of whack for cannabis, the only way to grow decent stuff is to maintain a steady pH that locks out excess or allows extra uptake of certain elements.
You're using GH flora and can't go below 5.6 in RWDC without issues... you need to check your setup as you have something messing with your nutes. That's not how GH nutes behave in a DWC or RDWC setup at all. *shrug*
You're using R/O water... right? 'Cause if you're not then whatever your setup does with nutes isn't really helpful to other people, they don't use your water.
For the new growers out there... be mindful of giving advice when your experience pool is limited to one location or only a couple years of growing. This is an amazingly complex industry with a lot of variables and it often takes a few years to fully realize most of what that can entail.
Keep it Clean!
Then whatever is in your water is what's causing your pH issues.
Please stop telling people to use 5.6 in DWC or RDWC... unless they live down the block from you. Newbies are not using your water and you're confusing them.
Keep it Clean!
Thanks everybody it gives me a good idea on when to add nutes and when to add ph down.
I've got a couple extra and I'm going to run one at 5.2 and one at 5.8 see. They are super lemon haze clones . I'm using the technaflora line for nutes see what happens.
I take pics and put them up.