unknown

i have an issue that i have flushed yesterday and added epsolm salts this morning to fit the yellowing i haven't been able to find out what it is by search any forum,google,leaf def pics, anyone have experience with this type of problem?+600 watt hps, heat 80+, ph 5.8-6.2, 40% humidity, i fed it on monday with bat shit,hi brix, mixed in water.

how much Ca does it get?

What's the medium again? How many weeks flower? And tap or RO water?

tap-ph 5.8-.62,soil, ca- non at this point.

PH sounds low for soil man

My gues is its a combo of things your temps are high ph and humidity are low. The temps alone are not a huge deal if the plants are healthy but it looks to me like you have a salt build up and nute lockout going on due to ph and high temps and low humidity on top of it are just adding to the plants stress. Shoot for 6.5 with the ph and try to get your temps down and get some cal-mag. I had all my plants do this on my last grow I wasn't as picky about my ph and had major issues as soon as they went to flower my leaves looked exactly like yours I flushed got my ph in check and it cleared up

PH is low and they are looking hungry. When they start to flower, this the time when they speed the process up, once they set flowers you should be at your highest PPM level and begin dropping from there.

Sir.Ganga said:

PH is low and they are looking hungry. When they start to flower, this the time when they speed the process up, once they set flowers you should be at your highest PPM level and begin dropping from there.

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i only run ph meter, but i sorta understand ppm. i dont have a ppm meter. so feed full or half strength?

Don't do anything except bump your ph up to 6.5. You can do this by adding dolomite lime to the soil via top dressing or try to get you water ph to 6.5 going in. I would do the water at 6.5 first then try the top dressing if that doesn't work. I have just the opposite problem as you do. I have a high soil ph because of my dumbass adding too much dolomite lime. Do not do that. Go with half a tbsp per gallon of soil if you do the top dressing. Keep me in the loop on your progress. Having the high or low ph locks things out as you already know. It looks like Mg is lockout out for you. Just like you, I am working on my ph battle at this exact moment. I just ordered Aluminum sulfate powder to help me lower my soils ph. You dont want to start dumping nutes in if that's not the culprit. Take care.

Check the ph of your runoff if the ph is low the soil has a buildup if it is high it has a lack of nutes. It's just like with your water before you mix in nutes the ph is high after you ad them the ph drops. As far as feeding I would get them flushed with 6.5 water let them dry out and then give them half strength with some added cal-mag.

i will, right now i just did a second flush, realized it was 2-3 gallon flush for 5 gallon bag, did a full 6 gallon flush and took out some soil that didnt have roots to help the progress, though it was flush of more like 6.0-6.2 this time. i'll have to wait it out.i'll keep you up dated.

after flush it got worse, those leave are tanning up, plus the soil wont dry out. ive got a fan blowing on them during the day but the flower chamber has 0 air flow in and out. any suggestions?

you need to up the ph
ph for soil is supposed to be 6.8
View attachment 2717118

ok wait, i've had my soil at a high enough ph of 6.5- the other dudes where right, i stopped doing it this year to try for 5.5 , so i corrected it back and im waiting for hte plants to bounce back from the shock. still need to know if not having an outtake fan is bad?

How long and how much Hi Brix have you been using? My opinion is too much Calcium is locking up Potassium. A Potassium deficiency seems to be your biggest issue.

silasraven said:

ok wait, i've had my soil at a high enough ph of 6.5- the other dudes where right, i stopped doing it this year to try for 5.5 , so i corrected it back and im waiting for hte plants to bounce back from the shock. still need to know if not having an outtake fan is bad?

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If you are not supplementing CO2 then fresh air flow into the tent is needed.

fed about a full table spoon with bat shit at about one too two table spoons then flushed. heres where i have a problem with your theory about pot def, http://www.420magazine.com/forums/problems-pests-disease-control/81275-cannabis-plant-pest-problem-solver-pictorial.html
phosphorous def seems to be whats messing things up.

i think its P deficiency. the bat shit i put in it wasnt shaken so i doubt it got anything soaked into the water.

Hi Brix contains alot of calcium. And now that I know you used bat shit(high in ammonia nitrogen)I am pretty sure your issue stems from a Potassium deficiency. Excess of calcium and/or ammonia will lock up potassium.

silasraven said:

View attachment 2717161i think its P deficiency. the bat shit i put in it wasnt shaken so i doubt it got anything soaked into the water.

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Phosphorous deficiencies are very rare in container plants, very rare. Plus that is not what a P def looks like. That picture shows a classic Potassium deficiency.

Leaves tanning too huh, look kinda like this: