Cal mag or something else?

week 5 of flower seems to be getting worse, planted in special mix light added pk13/14 half strength this week and extra dose of cal mag last 2-3 weeks ec at 1.4, some of the tops are close to lights so may be heat stressed but nothing i can do.

What’s the temperature of the room and ph of your run off?

Temp roughly 28 at canopy top, ph 5.5-6.0 not a clue about run off i have never tested it.

Well let's see here. It's not going to be a deficiency for lack of P, K, Ca, or Mg since you're adding PK13/14 and double dosing with calmag. What brought you to the conclusion that you needed to double dose the calmag? Have you ever heard of nutrient antagonism? Too much Ca can cause problems with other nutrients. You probably don't even need it if you're growing in BioBizz All-Mix. And why are going with pH 5.5-6.0? They recommend on their website 6.2-6.5. You're not growing hydro which likes a lower pH you're growing in soil.

Did you spray something for bugs?

Im in gold label special mix light mate the soilless medium, and i used half dose of the cal mag for last couple weeks but the problem seems to have just got worse, my tap water ec is already 0.7 so didnt think i would need the calmag. It must be something else because calmag isnt solving the issue and no not sprayed anything

What's gold label special mix, coco or soil