Honestly that looks like mag def all over now. If they've been hardened off, your meters are good and , I'd say your problem there is mag def.
Now I can't tell you to drop your feeding schedule that someone has lovingly prepared for you, but I am a huge advocate of Lucas' formula. Whenever I had friends with problems with deficiencies in the past, I've switched them to Lucas and it's been fixed.
This is what I would do. Try this. Ditch your res. Make a fresh one with 1ml/l micro and 2ml/l bloom. (That's half strength) Don't add calmag. Don't use the grow part at all. Don't add the seaweed. Don't use the rapidstart. If you eliminate variables it's a lot easier to narrow down your problem. You should come in around 5.8 - 6.0 with that, depending on your base water. Don't adjust it if it's within that. If it's up at 6.3, it's fine, if it's below 5.8 bring it up; Mg is locked out with acidity.
If you run a Lucas formula res you really don't need to add anything to your res. I rarely if ever adjust pH, and I never add anything other than a touch of Mg mono in the early stages of flowering and a touch of PK towards the end. Tell a lie. I add an enzyme, but that is about keeping the res healthy not feeding.
Another thing you might try if you don't want to try Lucas (You definitely should) is dropping the florablend and the seaweed. Both of those are gonna be high in K which is most probably causing your Mg def. Just go back to the standard GHE feeding schedule (at half strength).
The more stuff you add to your res, the more stuff can go wrong and the less likely you are to understand precisely what it is.
Now I can't tell you to drop your feeding schedule that someone has lovingly prepared for you, but I am a huge advocate of Lucas' formula. Whenever I had friends with problems with deficiencies in the past, I've switched them to Lucas and it's been fixed.
This is what I would do. Try this. Ditch your res. Make a fresh one with 1ml/l micro and 2ml/l bloom. (That's half strength) Don't add calmag. Don't use the grow part at all. Don't add the seaweed. Don't use the rapidstart. If you eliminate variables it's a lot easier to narrow down your problem. You should come in around 5.8 - 6.0 with that, depending on your base water. Don't adjust it if it's within that. If it's up at 6.3, it's fine, if it's below 5.8 bring it up; Mg is locked out with acidity.
If you run a Lucas formula res you really don't need to add anything to your res. I rarely if ever adjust pH, and I never add anything other than a touch of Mg mono in the early stages of flowering and a touch of PK towards the end. Tell a lie. I add an enzyme, but that is about keeping the res healthy not feeding.
Another thing you might try if you don't want to try Lucas (You definitely should) is dropping the florablend and the seaweed. Both of those are gonna be high in K which is most probably causing your Mg def. Just go back to the standard GHE feeding schedule (at half strength).
The more stuff you add to your res, the more stuff can go wrong and the less likely you are to understand precisely what it is.
