Help please detect gnats/mites or nutrient problem ?

Im looking for some advise on what to do. I have recently seen small brown dots mainly around the big vein that grows throught the leafs. It looks like something have sucked the juices out from the spots. I cant really tell if its spreading cause i recently discovered it. But its mostly focsed on one plant of many besides that they look very good in development al of them even the " sick one " I have looked with a x60 magnifier and cant se any spidermites. But i can se small small black i dont know if its some kind of bug or if its just dirt its not moving.

Its 4 weeks into bloom period my ec is around 1.8 - 0.2 backround water. temps are running alright humidity is to high around 70%. I have order a dehumidifier so that will not be any issues. And my runoff water is 4.5 very acid ( i always add 6.2 - 6.5 PH growing in soil ) but i dont know if i should trust that or not since the buds look very good to be in the 4 week of stage.

Please help me with some advices if u know anything about this issue / Flodas

If it's mites, I suggest you stick a yellow piece of paper with glue on it. Usually found in your hardware shops. Bugs are usually attracted to yellow colours. You'll be fine as long as there's no infestation.

I recently had a grow with spider mites. Red little fuckers who make webs.
I think this should be a picture of fungus gnats
Idk much about fungus gnats. But they like damp places.

Black dots? thats its POO.. lil fuckers like to hide. get them on a insecticide regiment. i use a few different kinds while in veg.look for lil white dots on underside of leaf those will be eggs. . this is spidermite damage

420producer said:

Black dots? thats its POO.. lil fuckers like to hide. get them on a insecticide regiment. i use a few different kinds while in veg.look for lil white dots on underside of leaf those will be eggs. . this is spidermite damage

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Definitely agree that black dots are bug poop but since hes in week 4 of bloom what insecticides could he use safely?

the homie said that nor cal 86 is cool all the way to day of harvest.. i wont smoke it tho. lol Lady bugs imo. i throw them in every month. sorry did not see the 4 weeks in bloom part... my bad.Norcal 86
it says up to 10 days before harvest

420producer said:

the homie said that nor cal 86 is cool all the way to day of harvest.. i wont smoke it tho. lol Lady bugs imo. i throw them in every month. sorry did not see the 4 weeks in bloom part

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Ladybugs are great. I wasnt sure if there was a new type of insecticides I hadnt heard of.

if its just one of many. then maybe you just remove it from room so not to let those fuckers move on to your others, and that be that...

lio lacidem said:

Definitely agree that black dots are bug poop but since hes in week 4 of bloom what insecticides could he use safely?

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1% Pyrethrin. They won't mess with the buds. Too much natural insecticide. Apply with a one hand pressure sprayer or spray bottle. Wet the top soil, lower stem, and effected leaves. ~ Avoid spraying the flowers~

Pyrethrin breaks down fast and a second application needs to be done in about 6-7 days to kill the bugs hatched from eggs.

Advise on the next grow.

As soon as you prepare pots to plant seeds. Treat it automatically. Think of it as a necessity. If there's bugs or not. Repeat the treatment anytime you see any kinda of bug in the grow room. If you see an adult, it's not there to hang out. It's laying eggs. Pretreatment prevents them from establishing a big family around your plants.

Predatory mites and or lady bugs could be safe and beneficial. I gave my gals a Green Zone spray in their first week of transition and let a swarm of predatory mites run loose in my tent and hadn't seen any further issues. I also am still unsure if I had some kind of mites running around or stink bugs chewing on my gals though.

Kinz said:

If it's mites, I suggest you stick a yellow piece of paper with glue on it. Usually found in your hardware shops. Bugs are usually attracted to yellow colours. You'll be fine as long as there's no infestation.

I recently had a grow with spider mites. Red little fuckers who make webs.
I think this should be a picture of fungus gnats
Idk much about fungus gnats. But they like damp places.

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Its not fungus gnats because there is nothing flying in my tent and nothing stuck on my glue yellow paper. / Flodas

Dudemankidson said:

Predatory mites and or lady bugs could be safe and beneficial. I gave my gals a Green Zone spray in their first week of transition and let a swarm of predatory mites run loose in my tent and hadn't seen any further issues. I also am still unsure if I had some kind of mites running around or stink bugs chewing on my gals though.

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I have really looked with my microscope and cant find any mites.
Is it possible that it may be due to to acidic soil leading to lockout. My runoff is way to low ( 5. how that could happend i dont know i always ad 6.2-6.5 thats why i wounder if it may be cal-mag its mainly brown dots concentrated to the main vein on the leafs if u look it up it looks very similar help appreciated / Flodas

Dudemankidson said:

Predatory mites and or lady bugs could be safe and beneficial. I gave my gals a Green Zone spray in their first week of transition and let a swarm of predatory mites run loose in my tent and hadn't seen any further issues. I also am still unsure if I had some kind of mites running around or stink bugs chewing on my gals though.

Click to expand...

I have really looked with my microscope and cant find any mites.
Is it possible that it may be due to to acidic soil leading to lockout. My runoff is way to low ( 5. how that could happend i dont know i always ad 6.2-6.5 thats why i wounder if it may be cal-mag its mainly brown dots concentrated to the main vein on the leafs if u look it up it looks very similar help appreciated / Flodas

First get a while plant pic.

Next get some spinosad. It kills all leaf eating pest and is safe up to harvest.