Heat stress, Mag deficiency, or underwatering. Help please.

yeh, Nutes every time and a calmag supplement. Coco doesn't retain any nutes so you need them every watering. Only time I don't use nutes is the final flush. I flush with cannazym only since I reuse the coco.
do yourself a favor and read one of the coco threads (if you haven't already) to get coco specific information. Once you understand the differences between soil and coco you should have excellent results.

Thanks so much EvlMunkee. Went and got myself some CalMag Plus today. Mixed 2.5ml/1gal. When should I up the CNS17 Grow amount from 2.5ml?

Also, raised the lights about 1-2 inchs and the leaves aren't as curled up.

Krants said:

Thanks so much EvlMunkee. Went and got myself some CalMag Plus today. Mixed 2.5ml/1gal. When should I up the CNS17 Grow amount from 2.5ml?

Also, raised the lights about 1-2 inchs and the leaves aren't as curled up.

Click to expand...

You don't necessarily have to raise it from 2.5. Watch for signs of deficiency. 2.5 is a good place to start...then move up if you have to. Remember, that amount is for a full strength feeding. If you are feeding at 50% still it would be half of that.
Normally I am on 1/4 strength nutes for 1st 2 weeks, then half strength for 3rd week and full for 4th week. This is just an average....watch your plants.
If you are only using 2.5ml of Grow now, you could increase it. Botanicare says 10ml pergal for seedling stage.

As I recall, Botanicare was generous in their dose recommendations, taking my ppm up to about 1200 (2.4 EC). I don't usually go higher than 900 with Canna.

Plant looks better but still curling some. Temps at 82 sometimes but 84-86 steady. Humidity is 35%-38%. Genetic mutation? Notice one leaf is funky. Has the middle and right part only. .....Can't see it in that one. Here it is smaller, on the right.

You have too much time on your hands... JK.. umm, temps are high.. humidity is too low. your vapor pressure deficit is way off..