Experienced grower having major issues...

HailTheLeaf

HailTheLeaf

Well-Known Member
Hi, I've never had yellowing like this so early in flowering, ever. The only difference between this grow and the last 8 or so is that I was forced to change soils (no more BioTerra). I'm at my wits end, I've tried flushing, more nutes, less nutes, water ph is around 7. I have no fucking clue what the problem is, I've tried everything I know. 600w HPS, 2 fans going, BioCanna nutes.

View attachment 1404093View attachment 1404094View attachment 1404096View attachment 1404095
 
jawbrodt

jawbrodt

Well-Known Member
Or.... Did you let them dry to the point of drooping, by any chance? I've had some major yellowing/leaf dropping, after doing that. It takes a few days afterwards, to take effect, but is irreversible, once it starts. It's worse when the nitrogen levels are on the lower end, to begin with.
 
HailTheLeaf

HailTheLeaf

Well-Known Member
Was using Fox Farms Happy Frog, that didn't work out so well so I recycled some older BioTerra mixed with it and fuck all...
 
AutoFems Rule !!

AutoFems Rule !!

Member
check out this webpage, if you haven't already !

http://www.greenmanspage.com/guides/plant_abuse.html

could it also be a heat / humidity issue ? (even with the fans ) due to you having to heat your house for winter.

i have a hi/low recall thermostat that i got on ebay for like 15 bucks....

i'm a bit colorblind so i couldn't compare your pix to the above webpage !!


Peace,
Bill


also found this:

http://www.marijuana-seeds.net/Thanks-ThankYou.htm


"Both of these leaves in figure 3 and figure 4 are from the same plant. It could be over fertilization, but more likely it is due to the pH being off. Too high or too low a pH can lock up nutrients in the form of undisolvable salts and compounds, some of which are actually toxic to the plants. What then happens is the grower then tries to supplement the plants diet by adding more fertilizers, throwing off the pH even more and locking up even more nutrients. This type of problem is seen more often in soil mixes, where inconsistent mixing of the medium's components leads to "hot" spots."


the pics below this passage look similar to yours !!


and also:

http://www.icmag.com/ic/showthread.php?t=11688



" Solution to fixing a Manganese deficiency
Foliar feed with any chemical fertilizer containing Mn., or mix with water and water your plants with it. Any Chemical/Organic nutrients that have Manganese in them will fix a Manganese deficiency. (Only mixing at ½ strength when using chemical nutrients or it will cause nutrient burn!) Other nutrients that have Manganese in them are: Manganese chelate, Manganese carbonate, Manganese chloride, Manganese dioxide, Manganese oxide, Manganese sulfate, which are all fast absorption. Garden Manure, Greenssand are both good sources of manganese and are medium/ slow absorption.

Now if you added to much chemical nutrients and or organics,( which is hard to burn your plants when using organics) You need to Flush the soil with plain water. You need to use 2 times as much water as the size of the pot, for example: If you have a 5 gallon pot and need to flush it, you need to use 10 gallons of water to rinse out the soil good enough to get rid of excessive nutrients.


Picture 1 shows a manganese deficiency in flowering."


this picture looks even more like yours !!



It's probably a combo of these things but it all starts with mixing the diff soils together incorrectly !! I know that you won't be mixing soils again, lol !!

can flushing numerous times compensate ? I don't know !! obviously this late in the game transplanting is not gonna happen. If you flush again and don't see improvement quickly it's time to harvest early before you lose the harvest altogether !! You are definitely more experienced than I am but I don't think that i'm that far off !!

Peace again,
Bill

​
 
Icannabis

Icannabis

Well-Known Member
And this is the first problem you see in your grow? I mean those plants look thin and have stretch far to much. Have you changed your bulb recently. I mean you can see the stalks are thin and not robust. How are they going to support the weight of large buds? I know your going to stick and tie them but the plant couldn't is what I'm saying. Have you been running HPS the whole time because you need some blue light in there to build the stems and to tell the truth big buds too. 8 grows and you just changed soil from what you knew worked. I'd recommend chop and repeat with different soil and veg longer. Good growing
 
AutoFems Rule !!

AutoFems Rule !!

Member
I'd agree, a manganese deficiency but what other ones in addition to it ??

by the time you sort that out it will be too late !!

Live and learn, I guess !!

How many weeks were left to flower ??
 
Mother's Finest

Mother's Finest

Well-Known Member
Try to take pics under normal light, it helps alot with diagnosis. Your plants are showing signs of both Phosphorus and Potassium deficiency. It's hard to tell under the HPS light but I expect they'll probably be deficient in Nitrogen as well. Two or more macro deficiencies often means a pH problem. Test the pH of your soil first. The pH of the soil and that of the liquids you give them are two different readings. If the soil pH is about 6.5, give them a double strength, complete fertilizer mix pH'd to 6.5. If the soil pH is off, give them a fertilizer mix with extra acidity or lime to correct the soil. They won't be quite what they could have been whatever you do, so just figuring out the problem to avoid it next time should be the main concern.
 
HailTheLeaf

HailTheLeaf

Well-Known Member
Icannabis said:
And this is the first problem you see in your grow? I mean those plants look thin and have stretch far to much. Have you changed your bulb recently. I mean you can see the stalks are thin and not robust. How are they going to support the weight of large buds? I know your going to stick and tie them but the plant couldn't is what I'm saying. Have you been running HPS the whole time because you need some blue light in there to build the stems and to tell the truth big buds too. 8 grows and you just changed soil from what you knew worked. I'd recommend chop and repeat with different soil and veg longer. Good growing
Click to expand...
Yeah, it is the first problem I see in my grow, whatever is causing the yellowing will affect the yield so I'm not really concerned with supporting the weight of "big buds" that won't be there. I don't have to stick and tie anything in my room. I've been running HPS the entire time they've been flowering, no problem with that. 8 grows with the same soil before it became completely unavailable and I was forced to switch, yeah...and? Thanks for being a dick that was highly constructive.
 
kbo ca

kbo ca

Active Member
Lower the ph to 6.0 and add some nitrogen rich nutes, earth juice grow is a good organic nute and its hard to over feed with it. since you say your experienced im guessing you have good air flow and your lights aren't too close to your canopy. hope it all works out.
 
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