Heeeelllpp

im mixing now fresh destiled water i will add some calmag

I know it sounds crazy.. But try just plan old tap water balanced to 6.0 for a couple days and see what happens.. Your plant will thank you :).

It's not deficiency.. It's the other way around.. Check your local water report.. Your gonna have to get some information about your water.. It's rarely ever a micro nutrient deficiency in a plant this small... Cannabis loves and craves balance. Your probably using too much calcium for starters.. Especially if your using tap water.. Tap water contains Calcium and iron... Like it's nice to see folks guessing but I am not guessing :) or sharing my opinion.. This is what is happening to your plant :).

And my ec was 0.5 (0.3 was tap water) it’s sience 3 days after I give ec to 1.1 it’s possible def not stop ???

Possible iron defiency . I use calmag plus that has a bit of iron in. Never used canna Aqua so not sure what it contains.

For sure with ro/distilled u can avoid a lot of problem like salt accumulation around the pot and u can give more accurate calmag feeding and thats why a moth ago I buy a tiny ro system

I using tap water i let it sit 50hrs before use , should I change for destiled?

No man it isn’t nut burn, but i can’t say what is for sure