PLEASE HELP! Brown/ rust spots on fan leaves with purple stems (Week 3 flower)

TessaMaria

Well-Known Member
I am pretty sure I had some root bound problems with my Crystal Candy Fast Version, it was in a 3-gallon plastic pot bag. I made extra holes in the bottom of it, but I do think a bigger pot/ bag would have helped a lot. It finished just fine, not a great big harvest but its always better than none! I would also ph my water to 6.8. Because the PH meter I have can be off by .1-.2 either direction so the range is 6.6-7.0 if I tested it at 6.8.
:peace: :)
 

Moabfighter

Well-Known Member
IMO OP is dealing with phosphorus deficiency. I just dealt with it. Some thought cal mag and it didn’t fix my problem. Giving more phosphorus did.

other two posters under him have something. Else wrong. Not phosphorus.
Edit don’t be afraid to feed your plants. Cannabis is a hungry weed. I feed 1600-2000ppm in flower.
5C621501-AC0C-4BC0-B5CB-9CDC612437B3.jpeg

this is day 15. ^^^

also IMO up your PH to 6.6-6.8. It’s probably dropping aswell, your PH. Making it quite acidic more like what hydro range prefers.
 
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Bukvičák

Well-Known Member
I use EC VS PPM.

According to this conversion chart I found on the line, IMHO, yes 1400 PPM is too high for week three flowering. That's EC 2.0! I don't have the expertise to advise what your EC/PPM should be. I try to stay 1.5 or below.

Let's ask the other successful growers where their EC/PPM range.

View attachment 4862042
1400ppm is EC of 2,8 unless you are @700 scale (most likely not) and yes 1400pmm is too much. What does the chart say?
 

Bukvičák

Well-Known Member
IMO OP is dealing with phosphorus deficiency. I just dealt with it. Some thought cal mag and it didn’t fix my problem. Giving more phosphorus did.

other two posters under him have something. Else wrong. Not phosphorus.
Edit don’t be afraid to feed your plants. Cannabis is a hungry weed. I feed 1600-2000ppm in flower.
View attachment 4862521

this is day 15. ^^^
I also think its phosphorus, but do not agree with feeding his plants so strong. Your plant is bigger than all of his together, so I can imagine she eats a lot thou...
 

Moabfighter

Well-Known Member
I also think its phosphorus, but do not agree with feeding his plants so strong. Your plant is bigger than all of his together, so I can imagine she eats a lot thou...
Oh wow. I thought it was one plant on first glance. You are correct. OP do not feed more. 1400 is probably too strong for your plant/root size anyway.
OP are you using something to keep your roots clean? Grab a bottle of southern Ag garden friendly fungicide. If you do have fungal issues... you won’t anymore and this will help your roots anyway. And it’s cheap. Not snake oil I promise.
 

Moabfighter

Well-Known Member
OP you’re doing too much weird shit with not enough experience with your nutrient regimen. Keep it simple. You want a primary base that takes most of your PPM and then small amounts of others for the boosters or micro nutrients. It seems you’re just dumping a bunch of shit in.... been there don’t get me wrong. Order you a bottle of botanicare pure blend pro bloom soil formula. Get the gallon because your plants will love it. Hard to over feed with it, very gentle nute. Order package of jacks classic blossom booster, package of “flower fuel”, and the Garden fungicide. That will grow you, and anyone reading this, the best flowers they’ve ever had, and it’s easy. Don’t over do the flower fuel. Use as container says. One scoop per gallon. That’s all cannabis needs. The jacks, half a scoop ish of what comes with the container per gallon. Money.

edit I will say my feed regimen rides the low side of PH. You’ll need PH up with this also. Sorry.
 

Kriptior

Member
OP you’re doing too much weird shit with not enough experience with your nutrient regimen. Keep it simple. You want a primary base that takes most of your PPM and then small amounts of others for the boosters or micro nutrients. It seems you’re just dumping a bunch of shit in.... been there don’t get me wrong. Order you a bottle of botanicare pure blend pro bloom soil formula. Get the gallon because your plants will love it. Hard to over feed with it, very gentle nute. Order package of jacks classic blossom booster, package of “flower fuel”, and the Garden fungicide. That will grow you, and anyone reading this, the best flowers they’ve ever had, and it’s easy. Don’t over do the flower fuel. Use as container says. One scoop per gallon. That’s all cannabis needs. The jacks, half a scoop ish of what comes with the container per gallon. Money.

edit I will say my feed regimen rides the low side of PH. You’ll need PH up with this also. Sorry.
I am following the Bio Bizz nutrient schedule at half dosage not just dumping shit in...
 

aw_cmon_baby

New Member
I am in organic soil, is flushing a good idea?
this is going to sound drastic, but so is correcting an organic grow 20+ days into bloom.
at this point, forget about organic. you need to be in direct control of as much as possible because you don't have the time to rebuild a healthy rhizosphere in your soil. fyi my suggestion requires chemical nutrients (think general hydro flora series or advanced nutrients 3 part grow). flushing your soil with that much water will wash out whatever nutrients are in it, essentially turning it into an inert medium. after the big flush and the initial feeding afterwards with the diluted nutrient solution, you treat your plant as if you're growing hydro in coco coir from that moment on.
 

Millo

Well-Known Member
I am also curious what happened. I use biobizz soil and nutes and have similar issues...
 

Kriptior

Member
I think the issue was the PH of the soil being too acidic. After feeding with calmag and seeing no results, I opted to top dress with dolomite lime and within a week the spotting stopped spreading and all new growth was green and healthy.

I am now waiting for 20% amber trichs and it is harvest time. Hope this helps guys!
 

Millo

Well-Known Member
I think the issue was the PH of the soil being too acidic. After feeding with calmag and seeing no results, I opted to top dress with dolomite lime and within a week the spotting stopped spreading and all new growth was green and healthy.

I am now waiting for 20% amber trichs and it is harvest time. Hope this helps guys!
Thanks! Glad to hear your plants are doing good
 
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