Spots on plant leaves

[Chiguy420]

Hey guys today I found these spots on (2) of my plants and I’m not sure what it is or what caused them. I also don’t know if I should pluck these leaves so it doesn’t spread or just leave them there? currently they are still there. I make sure to PH my water btwn the area of 6.3-6.8(normally 6.5/6.6) I grow (4)plants in fox farm ocean forest soil with perlite. I use Timber Grow cob LED 640watt lights(lights are 30inches from my smallest plant/26ish from my tallest plant(neither of those two are effected ones) here are the (2) plants with these spots… one plant is a sativa(super silver haze) the other is indica(berry og Kush)

Sativa^

Indica^

[Chiguy420]

I also am battling a few(to my knowledge) fungus gnats by using yellow sticky traps and lost coast plant therapy solution. When I spray the plants I do it in the dark and I follow the direction per the bottle. Just thought I’d add this Incase that may be helpful or may even attribute to those spots? .

[tommy.tee]

My first guess is wind burn
My second guess is thrips
Fungus gnats don’t leave damage on leaves really

Thrips have next to became to indigenous to the northern mid-west

[Chiguy420]

Hey tommy thanks for the help! It’s quite possible it may be wind burn! I do have 2 small 6inch fans that were placed pretty close to my plants, maybe causes them to dance a little more than needed. I’ll find better placement for them, but should I remove these leaves or are the ok to be left alone?

[jd7321]

I would say it maybe Cal mag brown spots in usually a calcium deficiency but if the soil got to dry it can show up I would leave the leaves and keep the pH a little higher 6.8 in soil

[Chiguy420]

Hey jd, it’s funny you say that about the soil drying out… aside from having fans maybe a little too close… I did recently let my soil dry out a day longer then what I usually do… I’m still trying to find that sweet spot on when to water them. Prior to this photo I let the plants go 5 days before I watered again, normally I do 4 days but this past time the pots still felt a little heavy. That extra day made it feel very very light…

Early on I was having issues on over watering my plants and too frequently! So I switched things up and still can’t seem to find that sweet spot cause I’ve been seeing these spots for about a week close to two and just now am posting🤦🏽‍♂️

My watering habits early on was about 1 gallon every 3 days, I was using the finger in soil method to see if it was dry and not really lifting the pots. I believe I overwatered/too frequently because I posted a thread here not too long ago about a small green algae issue which I found out isn’t a too big of an issue but was probably due to my watering habits…

Now I water 80% of a gallon jug(roughly 100oz) every 4 days. I make sure to lift the pots around day 2 or 3 but they still seem on the heavier side. That day 4 mark seems to be about right, but this is also still very new to me so I’m not 100% sure on if that’s right lol.

When I was watering that 1 gallon I was getting a good amount of water run off and now with my new habits at 80% I don’t get any water run off. I grow in 5 gal fabric smart pots with fox farm ocean forest and perlite(3 parts soil 1 part perlite though I do have some plants at 2 parts soil 1 part perlite…wanted to try different things to see what was best…) I use the fox farm trio nutrients every other watering and currently only using big bloom and grow big(6 TSP big bloom 3 TSP grow big… I worked my way up slowly to this amount)

So aside from bad watering habits and green algae, now I have some fungus gnats starting to appear on my yellow sticky traps​:weary: about 8 or so on random ones placed through out the grow… I’m having quite the welcoming experience to growing cannabis needless to say lol. Seriously tho… KUDOS TO ALL OF YOU GROWERS OUT THERE! I see some of the photos posted throughout the pulse community and first I then tell myself I’ll get there one day lol.

[Wheels84]

Should definitely try a root drench with Dr. Zymes for the fungus gnats. They offer free samples even

[Chiguy420]

Have you ever heard of this stuff?? I’ve been using it but not sure how effective it is yet cause I still see the fungus gnats

[Wheels84]

I have heard of it, and know growers that use it, but I haven’t tried it myself

[jd7321]

cut the watering in 1/2 so you can water every 2 days might work better for you