I also see signs of cal-mag deficiency thought canopy. Want to switch to flower but this is stoping me. I use pro mix hp with HG nuets. Ph is 6.2. I add cal-mag from day one… just started having issue in flower room with 8 750w de on 600w now.
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Where are you taking temp readings? At the canopy? Temps look good but those 20% humidity fluctuations every 15 minutes will cause a problem.
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One picture is before I added Trolmaster. Trolmaster Might just be the ticket. I went from 20% swing to 5-6% On the humidity and 2-3 degree temp swing on the Cooling… I do see some calcium and magnesium deficiency tho. I wonder if the two play a role in the canoeing. Also don’t know if I should spray them with cal-mag for a faster recovery
COPY/PASTE the below list into your forum post.
Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)
- What strain, Seed bank, or bag seed
- Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
- Vessels: Pots, Grow beds, Buckets, Troths
- PH of Water, Solution, runoff (if Applicable)
- PPM/TDS or EC of nutrient solution if applicable
- Indoor or Outdoor
- Light system
- Temps; Day, Night
- Humidity; Day, Night
- Ventilation system; Yes, No, Size
- AC, Humidifier, De-humidifier,
- Co2; Yes, No
Always try to upload a clear picture of any issues you may have to allow the community to assist you.
Add anything else you feel would help us give you a most informed answer should be included. Feel free to elaborate, but short and to the point questions and facts will help us help you in a more efficient manner 
Thanks!
What is your TDS in when you feed, what is your feed/water schedule, do you water or feed daily, what is the current runoff TDS and PH? Need more info to help.