Random burnt spots, Afghanica, HQ Pictures, HELP!

Hello,
Im a medical marijuana patient from California, and Im having a slight problem with a few of my plants in my lab. My plants are 19 days old.

• PH: 5.8-6.0
• Humidity: 55-65
• Temperature: 75-80
• Rockwool
• Self watering for now
• 2 24" Fluorescents 17 watts/each, 2 mini CFL 13 watts/each, 1 CFL20 watt = 80 watts, lights on 24/7
• Vornado fan on low 24/7
• General Hydroponics solution: G/12.5ml/per gallon, M/7.5ml/per gallon, B/2.5ml/per gallon, (my plants only get distilled water)

Okay thats that break down, so now with the problem, I barely started noticing these shiny little spots on random spot of the leaves and later turning into rusty looking burns, I've check for bugs with a magnifying glass, and I havent seen any bugs, (but who knows I dont have a 10x lens...) but I need some opinions, help from the experienced will be appreciated.
5 Afghanicas and 1 Sativa


notice the spots?

closer look

again

help..that shine on the right leaf is how it begins..

i had the same problem was almost like the air is too dry and its drying the leaves out they feel dry...... but i left the plants alone and when the new shoots grew no other leaves had this problem and they turned out fine just the 2 or 3 leaves had the problem so i pruned them off but i dont exactly know what the cause of this is. could be some kind of plant disease for all i know.

hey thanks for your input man i really appreciate it, my humididty levels fluctuate from, 55-60 percent, and the temperature levels range from 75-80, ive ran down the list of problems it could be, and i dont know what is really causing it, it could be nutrient burn but its hitting the leaves randomly, because overall the plants are healthy looking but then these spots show up randomly, im really hoping its not bugs, but im going to get some ladybugs just in case..

CanadianBacon said:

i had the same problem was almost like the air is too dry and its drying the leaves out they feel dry...... but i left the plants alone and when the new shoots grew no other leaves had this problem and they turned out fine just the 2 or 3 leaves had the problem so i pruned them off but i dont exactly know what the cause of this is. could be some kind of plant disease for all i know.

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They look to have a very heavy green colour!
possibly slight nute burn.
Id back off the nutes slightly and see how they respond.
good luck

This is unlikely since they're under weak lights at the moment but if there are water droplets sitting on the leaves as I can see in the pictures its possible for the water to focus the light like a magnifying glass and burn the leaf. Just a thought. I can tell you love your plants though because I barely noticed the burns in those first two pictures

The white stuff kinda looks like salt buid-up, and yea that is a heavy green color. Maybe to much N.

slight nute burn or u got a lil drop or two of fert on nthe fans while watering.,.,ferts/water that sits under the light on ure fans burns them.,.,all is go0d

Hello Everyone,
Aye thanks for all your inputs, its highly appreciated, because its different views which leads me closer to a solution so thank you. Alright well its only been a day, but I have some more pictures to help you guys try to help me to diagnose the problems, cheers to everyone

I have 5 Afghanica plants and 1 Sativa, all the Afghanica plants are taking the nutrients really well besides the random spotting, but the only one having a hard time doing so is the..

..Sativa


The Sativa plant's very bottom leaves were suffering badly but the rest of the plant is okay, so i snipped off the dead leaves to release the wasted energy going toward those leaves.




But the bottom leaves on the Afghanny's are well.



The Squad



The plants were watered before I decided to take flicks of them, I am aware of the light and droplets being equivalent to a magnifying glass, so I have the plants evaporate the moisture before turning back on the lights, the lights were on for pictures only for the moment.

100% bugs................

which kind?

LUDACRIS said:

100% bugs................

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TheRebelSoul said:

which kind?

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spider mites.
look at the underside of the leafs for whats shown in the pic.
and you will need a 100 times loupe magnifier to see them.
their eggs are easier to spot the cloudy balls.
spider mites can be 0.5-1.0mm in size dependent on their sex(fems are bigger)they also come in lost of different colours some translucent so they are very hard to see.

LUDA.

by the looks of the leaves that were pruned off kinda looks like nute burn to me although in the one pic are those holes throught the leaves? if it is bugs is right

i have the exact same problem it was caused by the fan blowing on the tops of the plants, sucking all the humidity. a lot of strains that come from the middle east and other desert like areas expecially indicas can handle extreme sun and heat with no shade but where i live and the temps reach 110+ degrees i had to put a fence up to block the wind cuz it was drying the leaves out but they still get full sun and light

what kind of bugs do u think i got the exact same prob. i know its not spider mites and i havnt seen any knats

LUDACRIS said:

100% bugs................

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For sure … critters are involved.

i bought a 60x-100x illuminated microscope just for this matter, and if there were bugs i'm pretty sure i would see some things with legs at the bottom side of the leaves right? but i didn't, bobs input seemed really appealing to me though, because i had two small fans blowing from the top as well, but i changed that to just one bigger fan blowing vertically.

so with all these problems arising within my laboratory, i have tried researching through all the possible reasons to what matches these symptoms and it just seems to me as if maybe my nutrients levels are fairly high, or it maybe pests, so ive flushed all my plants down thoroughly first i flushed my rock wool with plaindistilled water for two waterings, let dry twice and watered with regular nutrients, left for a few hours came back and noticed more of these spots, i checked the leaves with my microscope and couldn't find anything with legs, so i went to bed, woke up today, and plants seemed normal but i flushed the leaves with cold cold water anyways due to the fact that some spider mites have a hard time populating in what seems to be harsh environments for them, so i plan to do this at least once a week, i also added a bowl of water to the ground of my room for a bump in the humidity as well. so i did all i can to avoid bugs if any, but it might be my general hydroponics nutrients levels too..we'll see..i'll have pictures up.

bobonthewater202 said:

i have the exact same problem it was caused by the fan blowing on the tops of the plants, sucking all the humidity. a lot of strains that come from the middle east and other desert like areas expecially indicas can handle extreme sun and heat with no shade but where i live and the temps reach 110+ degrees i had to put a fence up to block the wind cuz it was drying the leaves out but they still get full sun and light

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