Nutrient def or something else??

HI,

I am trying to help a friend fix a problem that has just occured with his grow. I thought I would employ the extensive wealth of knowledge on theses forums to aid me.
My friend has been doing the same formula for years and never had a problem. now this.

Indoor/Outdoor: Indoor
Growing Medium: Perlite
Growing Style: potted, saucer fed
Watering/Feeding Frequency:
Nutrient Strength (PPM/EC): 1.6-1.8
PH Levels: heres the thing, i tested nute that had been sitting in saucer for 2 days and ph was 6.9...I was ahaaa, heres our drama. but then I tested new nute going into saucer and it was 6.3 so now im dubious
Temperature/Humidity Levels: 26-28c hum 40-60
Air Flow/Fans etc.: all adequate, plenty of fresh air
Lighting Type (CFL/HPS/MH etc.): hps
Total Wattage: 3600
Growth Stage: Veg
Plants Age: Unsure
Cannabis Strain: unsure.

So far I have suggested a good flush with ph balanced water and going to half strength nute. testing the nute for ph at frequent intervals in the saucer.
Friend has also ran a run of Fongarid through as well.

Sorry about the poor quality of the pic.

You will see little spots towards the ends

pics too dark and need whole plant pics too.

From that dark picture it almost looks like spider mites, you better hope not...

m420p said:

From that dark picture it almost looks like spider mites, you better hope not...

Click to expand...

I agree with the possibility of mites, but I do not agree it will be a big issue to fix if it is. I had them once, I mite (joke ha ha) have went over board but I bought some no pest strips, sprayed mighty wash daily for a week, and made a pepper spray with jabinaro peppers. 2 weeks later I inspected with a jewelers loop. Haven't seen one nice. Knock on wood.

Sorry I cant get another pic until I see my Friend again. its definitely not mites though. Although I had to take his word for it as he said he has checked them thoroughly for bugs.