Help, I believe phosphorus or molybdenum deficiency. Potentially mites?

noobgrowr

Well-Known Member
So I've got three very healthy plants. The Durban Poison and Cherry Lime Haze are about 2 feet tall and the Kandy Kush is about 3 feet tall. I've recapped most of this in my other thread (https://www.rollitup.org/t/can-you-confirm-if-this-is-mag-deficiency.947387/)

Here's info:
  • Growing in Black Magic soil from HD in 5 gallon buckets
  • Using the Black Magic nutrient A and B
  • Using Cal-Mag
  • Using neem oil
  • Using molasses
  • Soil PH was about 7-7.5 so my feedings have generally been around 6-6.5 to balance that out
  • 300w LED with 5w diodes, red, white, and blue (murrica)
  • 7 100w CFLs
  • Vegged for 3-4 weeks, been in flower for 3.5 weeks
  • Temps between 72-80, usually around 76
  • Airflow is ok, door is open during light hours, closed at night, fan on 24/7
Kandy Kush had problems in beginning and got a little stunted I believe but has recovered very well and seems to be quite healthy. A few of the bottom leaves have had some light browning at the edges but only 3 or 4. On my last feeding I noticed small moving dots on the outside of the pots on all three. Checking under my 10x loupe it appeared to be white or light brownish mites. After scouring the leaves and all over the plants, especially the undersides, I couldn't find any evidence of webs, eggs, or any mites on the plants themselves. I went to the hydro store and explained it all and showed the guy the pics I took of them and he said he had the same thing and they are soil mites due to not being on the leaves or buds and because I hadn't seen them til I watered. So I'm almost positive they're soil mites and harmless. But out of an abundance of caution he recommended an enzyme solution with peppermint oil in it and I gave the underside of the leaves a spray, the plants overall a spray, and the soil a spray a couple times.

However. I've also started seeing just a couple of leaves with a few spots on them. Probably less than 5 between all 3 plants. Again the buds are perfect and getting super frosty. Got tons of tops getting nice and dense. Terpenes are starting to come out and smell ridiculous. I also got a bottle of this stuff called Terpenator that's supposed to make them extra terpy lol

Anyway here's pics of the grow overall, the leaves with spots, and the little mites I mentioned. So my question is are these spots phosphorus deficiency (which is my belief) a molybdenum deficiency, which looks similar, or these bugs somehow?
 

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giglewigle

Well-Known Member
im no expert but theres a good site called grow weed easy where u can choose plant symptoms sorry i couldent be of more valuable gelp man best of luck with youre plants
 

noobgrowr

Well-Known Member
Thanks dude, I checked that out and that's where I landed on phosphorus or molybdenum. Just wanted confirmation from someone more experienced than I. Which doesn't take much lol
 

Dr. Who

Well-Known Member
# 1: Mites......Cpt Jacks at this point. OR your getting to the edge of using a nuke like FORBID 4F....

Personally, I would do the Forbid - 1 light misting on the surface of the leaves and BOOM, done!

#2: No
nutrient problem. Little high in N but, ok. That's normal lower leaf (from unda leaves) die off.
 

tpc_mikey

Well-Known Member
@Dr. Who I have a slight might problem also used some capt jacks on my fans sparingly and introduced 300 lady bugs, my plants are about 2 weeks from finish, what are your thoughts on mighty wash?
 

Dr. Who

Well-Known Member
@Dr. Who I have a slight might problem also used some capt jacks on my fans sparingly and introduced 300 lady bugs, my plants are about 2 weeks from finish, what are your thoughts on mighty wash?
Literally it's a repellent.....super weak pyrethrin mix.

I't safe to use. I've seen it work and not. Depends on how well you use it.

You used Capt Jack's on the whole plant. - It's systemic. It's also organic.
 

Dr. Who

Well-Known Member
@Dr. Who I have a slight might problem also used some capt jacks on my fans sparingly and introduced 300 lady bugs, my plants are about 2 weeks from finish, what are your thoughts on mighty wash?
Uh yea, I forgot to say that "ladybugs" are not the answer to mites. They don't eat them for shit. They eat aphids.
You want predator mites, they eat mites....
Sorry but, someone needed to tell you.
 
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