Need Help, Nute Burn, Deficiency, Something Else?

4 Weeks from seed White Widow in a 5 Gallon Pot(Roots Organics Potting Soil). About 10 inches tall. Distilled Water in at 6.5. Runoff is around 6.9. Have Pro Grow, and Pro Soil Bloom Nutes from Botanicare but havent added them as she's been growing fine. These light brown spots have been on the lowest fan leaves, and am starting to notice it beginning the next leaves up, but not as bad as the lowest fan leaves. Veggin w/ 6 23/w CFL's, 3-4 inches from plants.

Had a Fungus Gnat problem early this week, and flushed with 4/1 H2o2 yesterday.

Any help?

Thanks in advance.

Im in my first grow so dont take this as garanteed to be correct
When did the discolouration begin? I'm guessing its burn because I was overfeeding and had the same look to my lower leaves. I think your plant will grow out of it and be able to handle the nutrient strength of your soil in about 2 weeks you shouldnt have this problem anymore, though the damaged leaves will not fully heal. Also you used H2O2 which means your micro life may be totally dead now, which could quickly lead to a deficiency, so if you can find a product for soil that will reinocculate your soil with micro life you should probably do that. I am in coco so I don't know much about soil but thats the best advice I could think of.

I noticed the discoloration in spots on the lower leaves over the weekend, but there was no distinct pattern. So its been about 5 days since I first noticed it, but the lower 2 fan leaves are pretty bad now. When I saw the gnats getting worse I flushed yesterday with that 3% peroxide/water mix. I figured I wiped out the micros but wasnt sure what the main issue was, and what to add back into soil. But yeah I guess Ill check out something to get in the soil quick just not sure what to use yet. Or about the grow and bloom nutes, if I need to transplant, or if Im screwed.

anyone think I should start up nutes again,? or should I transplant into new soil? confused since that h2o2 flush, and am letting dry out a bit now.

If your in soil. Using h202 Will if not already have killed the beneficial bacteria. I don't grow in soil Im afraid but i would of thought re potting Will be needed. Hth

looks like P defiecency

yesca99 said:

I noticed the discoloration in spots on the lower leaves over the weekend, but there was no distinct pattern. So its been about 5 days since I first noticed it, but the lower 2 fan leaves are pretty bad now. When I saw the gnats getting worse I flushed yesterday with that 3% peroxide/water mix. I figured I wiped out the micros but wasnt sure what the main issue was, and what to add back into soil. But yeah I guess Ill check out something to get in the soil quick just not sure what to use yet. Or about the grow and bloom nutes, if I need to transplant, or if Im screwed.

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gnats are a bitch to get rid of you gotta use sticky pads and some bacillus to kill the larvae

shnazul23 said:

gnats are a bitch to get rid of you gotta use sticky pads and some bacillus to kill the larvae

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doubt its P as a plant wouldnt need to much P before 12/12 and while still in veg.

it surely looks like nute burn or ph burn though.

Thanks everyone. I'm repotting in "Basement Mix" tonight, light watering and gonna let heal for a couple of days. Then reintroduce 1/4 strength nutes in a few days and give it a week to recover b4 hopefully going 12/12.

good luck buddy. keep us updated

Everyone who uses h202 in a soil garden might aswell use chemical agents to sterilize the soil. that what peroxide does. it kills everything in the soil rendering it useless.

Looks like PH burn to me. I just had the same issue. My PH was waaay too low.

Cannabis plants respond well to a PH of 6.5 for veg and 6.3 for flowering when grown in soil. 7.0 PH is good for floral feeding or flushing.

yesca99 said:

4 Weeks from seed White Widow in a 5 Gallon Pot(Roots Organics Potting Soil). About 10 inches tall. Distilled Water in at 6.5. Runoff is around 6.9. Have Pro Grow, and Pro Soil Bloom Nutes from Botanicare but havent added them as she's been growing fine. These light brown spots have been on the lowest fan leaves, and am starting to notice it beginning the next leaves up, but not as bad as the lowest fan leaves. Veggin w/ 6 23/w CFL's, 3-4 inches from plants.

Had a Fungus Gnat problem early this week, and flushed with 4/1 H2o2 yesterday.

Any help?

Thanks in advance.

View attachment 1993048View attachment 1993049

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h202 kills bacteria not bugs. Where are you gitting your info from because your not even close to the mark on this one. when you noticed the fungus gnats you should have reserched some well known tested ways of eliminating them. you basicaly threw gas on a burning building.

Someone advised me the gnat larvae would die from the h2o2. Guess I got bad advice.