General Problems
HELP! Whats wrong with my Plant?
To assist the cannabis community in providing you with an accurate diagnosis, help and advice please answer as many of the the questions below as possible including a description of the problem/s and how long the cannabis plant has been suffering along with any good clear photos when available.
Indoor/Outdoor:
Growing Medium:
Growing Style:
Watering/Feeding Frequency:
Nutrient Strength (PPM/EC):
PH Levels:
Temperature/Humidity Levels:
Air Flow/Fans etc.:
Lighting Type (CFL/HPS/MH etc.):
Total Wattage:
Growth Stage:
Plants Age:
Cannabis Strain:
1,382 topics in this forum
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- 420 Crew
- 3 replies
- 514 views
Hi all I didn't know what sub forum this undiagnosed issue would fall under so here goes. What would be the most likely cause for this to happen. It is only affecting the shade leaves of one of two plants on the same system Thanks Crystal
Last reply by nitram, -
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- 420 Crew
- 15 replies
- 2.5k views
So, my struggle to grow healthy plants continues. I have flushed recently (2 weeks ago) because of over fert. Now the plants are still looking poor with the following symptoms: 1. Rust spots forming rapidly. 2. Lower leaves yellow and dying (trimmed off now). 3. Leaves very dry and rough to touch. 4. Leaf tips curling. Cabinet details: Lights 50cm above 2x 600W HPS Plenty of air in/out Clay pellet medium 30L Pots Fermentation for CO2 50L Res drip irrigation feeding system Canna A&B Nutes Avg plant height 24cm Any ideas and advice appreciated to resolve. JonDgls
Last reply by peteabordi, -
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- 2 replies
- 857 views
I have just repotted 3 one inch and 1 two inch seedlings from potting mix to coco/perlite mix 70%/30% after the seedlings were not growing and have been in for 19 days now.They have been under 250watt MH and yesterday i put in my 250watt HPS.I have good intake and outake fans. I have a cheapo PH tester that measures wetness of medium,light and the PH.After transplanting them into coco/perlite i tested the PH and it reads just past 7PH.What can i use to lower it? As i believe around 5.2 to 6.5PH is right for growing cannabis.I have read some people water in vinegar into the medium but thats usually soil not coco/perlite and other people say coffee grounds but then other pe…
Last reply by TD., -
Growth Fail 1 2
by TD.- 10 replies
- 1k views
I have been doing "trials" on a new growing space before i attempt the main event. In a DWC setup i have 6 plants sharing the same nutrients, all 6 plants are grown from seeds, all seeds from the same plant, 3 are healthy and growing, 3 have stalled and started to show signs of "?" PH has been 5.7-5.9 the whole time EC started at 0.2 for the first few days then 0.4 by the end of the first week. gradually bumped it up every 4 or 5 days, currently EC is at 1.2 Lots of dissolved oxygen in the water Nutrient solution has been Canna Light distance is not close enough to cause light burn its just strange to see a 50/50 of healthy and unhealthy from the same res......
Last reply by TD., -
- 5 replies
- 913 views
Hi all I have two girls supposedly of Kona Gold in a 1.2x1.2x2 tent in approx 8 weeks of bloom I say supposedly as they look like 2 different strains. Anyhow what concerns me is one of the plants has curled leaves and is not budding like its "sister" . Any suggestions. Thank You Crystal
Last reply by DownUnderDoper, -
- 6 replies
- 1.7k views
Hello everyone. Really need some advice here because I can not get my plants looking healthy. I have encountered a few problems which I feel I have dealt with appropriately but still I am struggling. The plants are Greenhouse Great White Shark. 17 of the 18 seeds germinated and 15 strong seedlings survived. The seeds were germinated in 1", pH adjusted Rockwool cubes. Up until a week ago the seedlings remained in a propagation tray where I would water them by hand at 7am, 6pm and midnight but it got to the point where I could not water them enough by hand so I placed them into my hydroponics system. The system is a drip irrigation recirculating system with …
Last reply by HashMakerOilProducts, -
- 3 replies
- 4k views
Hello OS'ers Having what may or may not be an issue with my room. The RH often drops to 30% in my room during lights on. The plants don't seem to be suffering any ill effects at all but I have been unable to find a minimum recommendation for Rh anywhere, only maximum of around 60%. Cheers
Last reply by HashMakerOilProducts, -
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- 420 Crew
- 21 replies
- 1.9k views
OK , the cold weather is upon us again and I am having the same problems , stunted growth due to cold perlite . The solution is usually to move my grow into the house where it is warmer and space is smaller . BUT , I want to keep my bigger space in the shed outback , so , lets hear your ideas . I am currently growing using large pots with Perlite sitting in Kitty Litter trays ,, water when they seem a bit drier . The air temp is about 25C , perlite temp about 17 C . So , what other cheap methods would be good to keep the temps up a bit ? Heat mats , Flood and Drain , DWC ????? I dont like flood and drain as it wastes so much nutes . Toss ya ideas at me plea…
Last reply by lightning, -
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- 10 replies
- 1.4k views
I have a problem with my jack herer and Euforia both are turning a pale green colour and curling under slightly, my room temps and humidity are near on perfect during lights on and off, all my nutes are mixed to a 2.0 EC as reconmended by lable for grow 20ml A and B per 5 litres i have recently smashed my digital PH tester i have another one on the way, would this be my problems to high or to low PH?. i also am running one 600hps light with two UFO LED lights i wouldnt think it was over lighting, as the plants were fine the first three weeks. altho i did lower the lights to 2 feet above tallest plant
Last reply by living_high, -
- 5 replies
- 759 views
help my light timer stuffed up and came on for 1 hour while plants were sleeping there 2 weeks from harvest very worried what will happen what to do
Last reply by uka, -
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- 420 Crew
- 14 replies
- 1.3k views
Hi everyone, I have a few Critical Mass plants on the go, trouble is they just aren't growing very well. The clones are nearing 7 weeks of vege and are only 10-15cm tall, with strange leaf deformations, and dying back starting at the base. I'm really pissed cause that's a lot of juice being used for nearly no results. My mate has the same strain at the same age and they are over two feet tall. It was suggested to me that it could be root rot? The roots I can see near the top are an off white with some brown but I think that's some staining from the clay...??? They get the best of everything - new bulbs, rhizo, cannazym, nitrozym, sensi a+b, superthrive etc and…
Last reply by aberton24, -
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- 2 replies
- 548 views
a mate asked me to look at his potplant and it's well into flower but looks to need a little longer. Sydney's been so damp lately he's got fungus through the buds. I just looked at the BOM though and it appears we are in for a sunny week. If he leaves it alone and it remains sunny will the rot just die, or now that it's got a hold will it just worsen? Seems a shame to pull it early.
Last reply by BaronS, -
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- 420 Crew
- 11 replies
- 5.2k views
Ive decided to go automated and in the past I never mixed up more than 5ltrs at a time so only worried about PH. However, Ive bought a 100ltr resi for my new room so Im guna need to be abit more involved. Ive seen most people giving PPM values but most nutrients give EC. so what sort of meter is best for what i need to do?
Last reply by SoliSticS, -
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- 8 replies
- 1k views
Hi Guys, In the last few weeks of constant rainfall here on the north coast I have noticed the humidty in my grow room climb from 60% to 80% and now I am starting to get mould in my grow room in the walls. I am saving up madly for a new centrifugal fan in the hope that better air flow will sort out the problem and I have a pedestal fan blowing over my plants at the moment but I cant seem to reduce the humidty ....have also decreased the watering schedule as well down to a bare minimum. Does anyone know any good methods to reduce humidity? maybe some of our friends up north in tropical Queensland or NT? I have heard that if you put a bowl of baking soda on the ground i…
Last reply by mark60, -
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- 420 Crew
- 9 replies
- 797 views
Hi Guys started growing from seed. drip irrigation. 1 x 15min (approx 1 drop per sec) Plants have been doing fine. just about week 4 from seed. Few days ago moved the plant under a 600w hps from fluro. few days later now plants look are bottom set are drooping almost touching the hydroton. top seems ok. Natrally most would say overwatered. but it doesnt get that much and its in rockwool which is in hydroton. any ideas peeps? also EC increased overnite from 1 to 1.2 so i added some water to bring it back down. doing a full res change this weekend. could that have caused it?
Last reply by hicksy, -