brown spots/calmag?

Hey dude to me that looks like manganese deficiency, calcium deficiency is smaller more rusty orange looking smaller spots. pic 4 looks like just a lil light burn. How close you got your lights?

OrganicGanja said:

Hey dude to me that looks like manganese deficiency, calcium deficiency is smaller more rusty orange looking smaller spots. pic 4 looks like just a lil light burn. How close you got your lights?

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2 feet on lights. im getting these everyday.thought calmag. thanx. lights are as high as they can go.

donkeydon said:

View attachment 390127 View attachment 390128 View attachment 390129 hi farmers well my air temps are 85/ water 67/ph 5.6/2 weeks in flower 13 gal uc//I fed 350 week one/ second run for me here/ thanx in advance for your help. strain is whitefire also some purpeling on stems to/// calmag fed at a half ml per gallon about 100 ppms thanx

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Looks like a P- to me. I see the reddened petioles, but it's not progressed to the dark green yet.

The one leaf looks to be straight up light-burned.

Double-check my charts.

oops. I did have the lights close by accident while adjusting another catstrophe . that was a plant with lower leaves that got scorched. im new to farming and still got more to go. even when its cal mag deficient or over and locked it is hard for me to tell. thanx again for your time

Seamaiden said:

Looks like a P- to me. I see the reddened petioles, but it's not progressed to the dark green yet.

The one leaf looks to be straight up light-burned.

Double-check my charts.

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please explain to the mentally challenged what steps would you take. a certain brand? thanx bumpa a lump""""""" don

You haven't given much information about your regimen to go by here and you did not put up whole plant photos, but assuming there's sufficient P in your mix, I would try playing with pH first, I would try lowering it a bit first.

You see, if you look at the first chart in my thread, you'll see that where the issue is occurring on the plant is key for making a visual diagnosis, and this has everything to do with nutrient mobility, which is to say whether or not the plant can translocate, or move nutrients, from one area of the plant to another. A common mobile deficiency might be nitrogen, and we would know that because the lower leaves are yellowing. So first we look at where: Top, Middle, Bottom.

After that, we look at the general appearance along with giving feeding regimen and environmental parameters consideration. Your temps and RH seem to be ok, but that pH seems a bit high to *me* (someone who hasn't grown undercurrent specifically, but have done perlite hempy tubs) given what I have read about hydroponic cultivation. That's what I would do first, without knowing a thing about what you're feeding, drop the pH. I'd go for 5.2 or so, see what happens.

thanx seamaiden. I appreciate your time.stop by anytime. don

Seamaiden is correctamoondo You have a P def

I would say it's a combo. Sea has pretty much nailed it. Imo. Good luck bro!