Get the meter. Lol get the meter! Lol I repeat. Get the meter!
Having a piece of mind and being able to eliminate ph from any issues forming is like having a little helper in the room. Most issues arise from incorrect ph or ph fluctuation and ph perfect nutes are not always ph perfect. It just means they are less likely to fluctuate. Get a meter you may have to adjust by just a few drops here and there but it will be well worth it to keep it exactly where you want it or just to know that it’s already where you need it. At the moment we believe the ph to be okay. But we don’t really know. Looks like it’s going through some advanced stages of growth though. I see lots of bright green unless that’s the issue arising. But it could also be putting out new growth like crazy.
I can’t quite tell if it’s yellowing or bright green and new. Kind of looks like center yellowing is starting like penny said that can be early zinc stages or possibly an iron deficiency starting. Maybe even sulfur issues. As funny as that sounds. It’s definitely early stages though. In a couple more days I think you’ll have a better idea of what the diagnosis could be.