Do I have spider mites?

[MackMcMacMac]

First, the deets:

Strain: auto/fem Tutankhamon (mostly sativa) from Pyramid
Age: 32 days from sprouting
Medium: FoxFarms Ocean Forest in 3-gallon felt pot inside a 5-gallon bucket (indoor grow)
Water: Water in = pH 6, water out = pH 6. Source = dehumidifier collection
Nutes: Added 0-10-10 bloom nutes on 30 Sept to fix K deficiency.
Lights: 4x100w (4x23w actual power draw) "daylight" CFLs on 18/6 schedule ~5 inches from tops
Fans: 2x8cm "pc" fans for intake, 4x8cm fans for exhaust
Avg daily temp (in bucket): 77° F
Avg daily RH (in bucket): 54%

She's currently growing in a space bucket and is 32 days from sprouting. I struggled with some K deficiency, but I think I've got that ironed out.

Then I noticed tiny white spots on some of the leaves.

Professor Google suggested this might be spider mites, but I'm not seeing any, even with my microscope zoomed way in close.

Tops:

Undersides:

If this is spider mites, OK... I can deal. I already purchased a remedy for it just in case. Shouldn't I be able to see the little suckers with this level of magnification?

If it's NOT, what else could it be?

Thanks a lot for any help!

Love,
Mack

 

[MackMcMacMac]

It just occurred to me that she may have gotten a little nutrient-infused water sprinkled on some leaves... Could that be the cause?

 

[daTenshi]

It just occurred to me that she may have gotten a little nutrient-infused water sprinkled on some leaves... Could that be the cause?

Yea were my thoughts exactly. Spider mite damage will be more close together and give the leaf a silver like color. That seems like a water/nute burn. Try and wipe off any wet leaves before putting it back under lights.

 

[Caconym]

It just occurred to me that she may have gotten a little nutrient-infused water sprinkled on some leaves... Could that be the cause?

If you can't find any mites this is likely what's caused your spots.