Nutrient deficiencies and pest ? Let me know what do you think?

Hello everyone
This week I noticed all my plants are having white stuff on their leaves if I try to clean that stuff it’d works . I would say it paint or something from the roof but this plants are inside of a grow tent. Unfortunately I don’t have a good picture of this problem.
In the other hand my Gold leaf is showing this symptoms


This my White widow CBD is showing this symptoms

Something to have on mind , I used to have this plants in a different place , the water source is different. Before i was using distilled water , the new place has a water filtration system but it’s not reverse osmosis system, I used that water( ±800 ppm / pH 7.0 ) on their first watering here

Soil: Fox farm ocean forest
Nutrients or fertilizer ? Yes
I’m testing sugar peak and Robert bergaman’s nutrients ( pH was 6.8)
What type of lighting are you using? Marshydro
LED 30" far away from the canopy
What are the temps in your grow space?
Day 79° F / Night 72° F
What is the RH = relative humidity in your grow space?
50%- 60% Day / 50%- 60% Night
AC ON , Humidifier ON, De-humidifier OFF

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I don’t see any signs of deficiencies.

Don’t worry about a few blemishes here and there. It is normal. If you do find critters, then Capt. Jack’s Deadbug will take care of them.

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Thanks for replying.


I’m thinking the same it could be some bug in this picture one of the spots it is a hole , the picture isn’t showing very clearly.

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Looks like it might had water got on them during watering

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It could be that. Thanks for replying.

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You’re welcome my friend happy growing

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I concur with the water of leaf might be the culprit. Plant looks healthy from the picture.

Hey guys what do you think about this?
Any advice.

Need more info soil , temperature and humidity

fox farm ocean forest
Day 79° F / Night 72° F
What is the RH = relative humidity in your grow space?
50%- 60% Day / 50%- 60% Night
AC ON , Humidifier ON, De-humidifier OFF
thanks for replying

Looks like magnesium or early stage off iron