The ph fluctuations are not significant, no more than about .25 it seems.
My bigger thought was the nutrient fluctuation due to consumption and evaporation. I flush every 2 weeks and intend to maintain that. I was more aiming this process at the in between time where I'm still regularly adding...
My reservoir is a 25 gallon bin. My plants drip feed in rockwool (double stacked 6" blocks), then drain into the reservoir.
I'm finding that I'm often adding fresh water to balance the nutes/pH from creeping up.
I currently have a top off valve running from my RO system into a bucket for...
Noted, I've added some fresh water to the reservoir to dilute.
Is there a good guide floating around for recommended nute levels at different stages? This is something I've struggled to find.
In the midst of my first grow using a top feed drip that drains into a reservoir below. Medium is double stacked 4" rock wool.
Air temp is 78
Reservoir temp is about 74
Feed at 1100ppm
Week 4 of veg
Reservoir ph is 6-6.1
The leaves look a bit wrinkly, just wondering what I might be missing...