
Boomer, sorry for the delay bud,...

<-- this is me!
...okay, GO Box nutes- [emoji106],... are those dosages per gallon? If so, your're underfeeding them; organics are pretty mild in NPK#'s, and take time to get broken down by the soil microbes into available forms,... do you use any sort of inoculant? Enzyme product (like Hygrozyme)? Promix by itself is very mild, so no help there!... It's great that you're watching your inputs pH, but keep in mind that not a reflection of actual in-pot pH, there are several other influencing factors that change medium pH's,... so, best thing to use is something like an Accurate 8 soil pH probe, for
direct measurement! (skip the skinny cheapo probes you see all over, they suck!)... otherwise, it's the dubious run-off method/calculation, though there's an improved version here (
https://www.autoflower.org/threads/...-testing-and-ph-estimation.41733/#post-928975 )... Now that said, with organics, you're not dealing with ionic salts, so the watering/feeding to run-off isn't necessary unless you've really overdone it,... Fact is, peat is very water retentive, and kept too wet will smother and cause wilting from root damages,... BUT I'm not convinced you need to go there with the run-off pH test yet, though the common belief is that you never need to check media pH with organics... that's a very conditional thing from what I've seen! ... Symptoms I'm seeing look mostly like P defc., so let me know about your dosage to determine if you're underfeeding for sure... it does look it though... and at this stage, there's not much room for improvement yield-wise, but squeezing all you can with good quality is worth the effort!