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You won't be able to get healhy clones off a sick plant. Concentrate on plant health first.
You need to run calmag in a coco system, but even better, use a coco-specific nutrient like Canna Coco. Coco has properties that are different from soil or hydro and tends to have calcium problems.
What is your runoff pH and EC?
Forget about the blood meal. There's no place for it in your type of grow.
Temps over 80? How much? Keep it under 85 at the canopy, with lots of air flow. Do you have an actual exhaust or are you just moving ari around inside your room?
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