Leafs from #1

Hello mate. i think you have a Ca/Mg overfeeding, normally those types of burns comes from this. I avoid to feed every week with Calmag. Good luck and happy journey!

NEVER grow at 24/0.........ALL cannabis plants NEED "sleep" for a correctly functioning metabolism and to finish their daily photosynthesis cycle. A plant with an incorrectly functioning metabolism will always have problems..........18/6 is optimal! Since you don't list any fertilizers in your diary, it is impossible to say what is causing the burning, but cal/mag at 10ml per litre, is most probably the cause. Bio Bizz recommend approx 0.5 - 1.0 ml per litre! You may have a substrate with excessive calcium, which will prevent the avilability of other nutrients.

If the specified calmag amount is correct, that would definitely be way too high. But I can also imagine that it's due to the website. The leaf tips would be totally burned and dark green leaf surfaces. Hashy is definitely right that a complete nutrient solution with flowering fertilizer + calmag at pH 6.5-7.0 should be best. Once the magnesium deficiency is gone, pH 6.0-6.5. For water, maybe start with a Brita filter; an osmosis system is always recommended in the long run. With tap water, always use a bit less than specified for the nutrient concentrations, as the water has a high EC value depending on where you live. A good starting value would be EC 0.2-0.3; for me, it's, for example, 0.7.

Oh wow, I’m with Hashy on the calcium amount. Maybe you listed the amount you’re giving incorrectly? 113 ml per gallon. If this is actually what you have given, that’s an insane amount. Something closer to 3-5 ml per gallon would be more like it. 113 is probably more than a plant would want in its whole life lol

Also if your giving the plant the amount of calmag your diary states then your giving it way way to much.

You have only given her calmag, she will need a Bloom nutrient as well now.

I think the sick leaves are due to magnesium deficiency. If you're watering with tap water + calmag, it can lead to an imbalance due to too much calcium (there's a lot of it if you have hard water), and magnesium absorption gets blocked. The slight clawing could also come from that.