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Well your plants look healthy. No signs of burn that I can see.
Keep it up, bro
Thanks man trying to get them healthier all the way around and get that proper Green shade, definitely already looking way better.
Leafs get these odd green pattern when pH fluctuates too much, new growth is looking way better after stripping the older not as healthy leafs.
The E.C I'm not completely sure yet, I'll probably go for 2.0 tonight and see, and they don't get all those PPMs at once so I think thats a big role in there too, but also they only take what they need supposedly, I don't know how it all works/balances together completely just yet, and then the watering frequency plays a role too.
Besides being sure you don't get too much of a dry back causing E.C spikes leading to toxicities as the water dries back leaving more salts behind.
Some commercial grows run 3.0 clone to harvest some 4.0, 2.5
Increasing the E.C is also part of crop-steering/ vegetative/generative steering.
Using osmotic pressure to stress the plants, increase the salt amount making it harder to uptake water, depending on the media.
Having all this food available but can't take it so easily does a thing to em and they GROW.
Osmotic pressure for rockwool/ somewhat coco.
In soil you can give less water to induce those responses through drought stress, works differently in rockwool.
Matrix potential or something, I'm just starting to understand it more/read about it more and play with it.