Hey guys this is my first time growing. Their are some yellow spots on the leaves and im not too sure what the problem is. Ive been looking through the Plant problems forum looking around and was wondering if someone could help me out. Thanks
Not sure whats the problem
- Thread starter osd983
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xum
Well-Known Member
Check this page out, it's pretty good for helping self diagnose plant problems.
International Cannagraphic : The Complete guide to Sick Plants,pH, and Pest troubles!
The most important thing you can do is make sure your soil has the right ph.
Next make sure you aren't overfeeding or underfeeding.
If neither of those work, your plant has cancer and it needs chemotherapy.
Just kidding about the cancer.
GOOD LUCK!
International Cannagraphic : The Complete guide to Sick Plants,pH, and Pest troubles!
The most important thing you can do is make sure your soil has the right ph.
Next make sure you aren't overfeeding or underfeeding.
If neither of those work, your plant has cancer and it needs chemotherapy.
Just kidding about the cancer.
GOOD LUCK!
BCBuddy420
Well-Known Member
Hi. I think I can at least help you narrow it down. What medium are you in? whats your ph at. What is your temps at and humidity. What nutes are you using and what feeding schedule? What light and how far and hows your ventilation. Also what is your pest management program (pmp) Answer these accurately and we'll get to the bottom of this, or close.
I bought them as clones, I got them on 4-26-10 and the guy told me they were about a week and a half old. So i would say they are about 3 weeks into veg state. Im not sure what the ph is, i have just been filtering local tap water that is taken out of local wells, I use the brita filter, and i let the water set out to room temp before watering them, and i added some super-thrive to the water as directed by the directions because i transplanted them twice, the day after i got them, i put them in a 1 gallon container with some Scotts fertilizer 10-30-20 then the next day i transplanted them again into a 5gallon container that has soil made of bat crap and worms and all this other stuff that im not sure of but ill get the name tomorrow. Im not sure about the temp, I have them in my closet with the both doors open, with one fan blowing air in and one blowing air out and with my window open so it kind of makes a breeze, so im guessing around 70f+ but no hotter than 78f (outside weather right now is about 80's). Havent used any nutes yet, not sure what kind to put, been reading trying to find out more about them after seeing the leaves like this, ive been giving them about half a cup of water every other day. Ive gone through some lights after reading through some forums. i first had a halogen light on them 250w because it was the only light i had, i had it about 2 1/2ft away from my plants and at that time i had both fans on my plants. Then i also added a phillips plant light 120w on them for about 2 days until i read that it wasnt good for them so i took it away(was also about 2 1/2ft away), and now i have 5 cfls small light bulbs, all this was done on or by last friday. I dont have a pmp, I just check on them all the time like when i get up in the morning or get home or before i leave. This is all in my closet, the space that they are growing in is about 4ft long by 1 1/2ft wide, and the height is 5ft+. Im am also running them at 24/0 right now.
BCBuddy420
Well-Known Member
No offense at all but youve changed things for these plants way too much. The cannabis plant like any plant needs a consistent yet optimal environment to thrive in. I mean it sounds like you know what your doing in a sense that some of the right measures have been taken yet some key requirements are not being met and possibly overlooked.
First thing is your PH levels controls the acidity levels of the medium you use. Medium holds roots, roots sap water to foliage, water holds nutrients, nutrients are locked out at different acidity levels. You are in a soil medium, your ph should be between 6.5 and 7.0.
ph is measured on a scale from 1.0 to 14.0 Pure water has a pH of 7.0 and is considered pH neutral. pH below 7.0 is considered to be acidic and pH higher than 7.0 is considered to be alkaline.
Accessing, fixing and maintaing your ph levels is very cheap despite being so crucial to overall plant health. Go buy a ph test kit, they use a liquid, a small vial and a color chart to read your ph level, simple and easy to use. Maintain your ph! Use ph up or ph down, sold in bottles, cheap.
Another thing is your plants are going to be really stunted and in a state of perpetual shock due to being transplanted so many times, jiffy cube to 3 gal pot is the only TP I ever do. One time is best.
The fact that they started with a halogen light and have been through 2 or 3 more types of lighting has also confused the plants.They need one type of lighting for each stage of growth unless you use the same the whole way, example: I use flourescents for cloning, MH for veg than a mix of hps x mh for flowering.
Also you need to do a PMP even if it is small. Go buy some " HOT SHOT Pest Strips " they are cheap and very effective, or you could do a spray every so often(research pesticides for cannabis), or a bug bomb( active chemical PYRETHRUM ) Tailor it to your needs. You will need some sort of a PMP at sometime of your grow.
Get a digital thermo/hygrometer(humidity) they are cheap, just so you know where you are at and can adjust accordingly.
I fully understand your a beginner and haven't quite "dialed" in a setup yet, it's cool man, it's my first grow too. I'm just stating that this is probably what has caused your poor growth and leaf damage. I hope this helps and remember a little care and knowledge goes a long way while trying to grow good smoke and the things I mentioned all included total around 50 bux or less.
Take care keep it green ~ BCbuddy
xum
Well-Known Member
Bat crap and worm casings are themselves fertilizer, and you added 10-30-20 Scotts during the first transplant. The plants probably over fertilized, and I'm sure the correct course of action is to flush it out. To flush your plant you water it with twice as much water as you have dirt. You said you're using a 5 gallon bucket, so you'll want to add 10 gallons of water to it and let it be for a few days.
Don't worry about setting your water out to get to the right temperature, just water it.
Don't worry about setting your water out to get to the right temperature, just water it.
xum
Well-Known Member
BCBuddy420
Well-Known Member
another thing is forget the 24 hours. Nature does not approve of this, neither should we. In my belief the plant builds sugars during dark periods and uses them while in light. They need this dark time. Some do the 24 thinking it maximizes growth but the plants do not use the light for a time during this phase regardless. Set your lighting to 18/6. They will like it better. Water just before the lights go off, with ph balanced water, of course hehe. Good luck.
BCBuddy420
Well-Known Member
ph is measured on a scale from 0.0 to 14.0
A pH of zero means that the concentration of H3O+ in the solution is 1 molar because the pH is defined as
pH = -log10[H3O+].
When the concentration of H3O+ is equal to 1 M, the negative log base ten of 1 is equal to zero. (copied from wiki) The standard measure of ph is 1.0 to 14.0 due to this. As sold for test kits...I know what I'm talking about. Ph 0 exists but this is not the measurement scale, as I stated in my post
BCBuddy420
Well-Known Member
Sounds good. Your welcome.
BCBuddy420
Well-Known Member
ph is measured on a scale from 0.0 to 14.0
Just incase you try to say I'm wrong... http://www.amazon.com/Economical-Strips-Vinyl-Range-strips/dp/B0015T5IU2
god I love being right, no offense
BCBuddy420
Well-Known Member
bump XuM hahahaha, sore loser... can't admit when your wrong, I always can 
WeSmkDro
Well-Known Member
holy crap , yeah you need to dial in like a mofo. I had a lotta the same problems you had at the very start of my grow. on a budget ... the room improves in small bits and pieces. hahah. youll get it. Just remember that the plant can only grow as fast and healthy as its weakest link allows. temp, humidity, nutrients, light, water, co2 . each one of these make or breaks your plants growth.
xum
Well-Known Member
I got no problem admitting when I'm wrong, I just haven't been watching RIU like a hawk. No sore feelings, thanks for helping me learn something!
However, my digital ph meter reads from 0 to 14, and just because we don't encounter many things that are that acidic, doesn't mean we shouldn't have the ability to measure them if and when we do encounter them.
http://en.wikipedia.org/wiki/PH
However, my digital ph meter reads from 0 to 14, and just because we don't encounter many things that are that acidic, doesn't mean we shouldn't have the ability to measure them if and when we do encounter them.
http://en.wikipedia.org/wiki/PH
BCBuddy420
Well-Known Member
Antigen
Well-Known Member
You'll want to raise the pH to 6.5-6.8 to prevent Calcium and Magnesium lockouts.
Also, from looking at your pictures, do you ever spray the leaves of your plant with anything? If so, do you put it back in the lights right after you spray it? Your spots look kind of like the "magnifying glass" effect, when the light reflects thru a drop of liquid and burns the plant in that spot. Make sure you leave the plant in the dark for 1 or 2 hours so it can dry off before it goes back under the lights.
Also, is that "Scotts fertilizer 10-30-20" the time-release pellets? Did you mix it in when you transplanted into the big pot? If so, you'll want to transplant out of that soil. Those time-release ferts are really bad for growing MJ. They will start releasing ferts when you don't want them in quantities you don't want which will mess up your pH and your plant. Flushing will only make them release even more, so a transplant is a good idea. If you didn't use a soil with these in it or didn't add them yourself, then disregard this.
Also, from looking at your pictures, do you ever spray the leaves of your plant with anything? If so, do you put it back in the lights right after you spray it? Your spots look kind of like the "magnifying glass" effect, when the light reflects thru a drop of liquid and burns the plant in that spot. Make sure you leave the plant in the dark for 1 or 2 hours so it can dry off before it goes back under the lights.
Also, is that "Scotts fertilizer 10-30-20" the time-release pellets? Did you mix it in when you transplanted into the big pot? If so, you'll want to transplant out of that soil. Those time-release ferts are really bad for growing MJ. They will start releasing ferts when you don't want them in quantities you don't want which will mess up your pH and your plant. Flushing will only make them release even more, so a transplant is a good idea. If you didn't use a soil with these in it or didn't add them yourself, then disregard this.
BCBuddy420
Well-Known Member
Ok that seems good, it can be up to around 70 % during veg but IMO I think somewhere around 20-30 % is good for flowering.
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