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Back to Grow Questions
how to know how much ppm a cannabis plant can handle
Brent_60s
started grow question 3y ago
how to know how much a cannabis plant can handle of ppm and how to find out
Solved
Feeding. Other
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Chucky324
answered grow question 3y ago
Hello. In the back of my Advanced Nutrient catalogue it has charts that are up to 2000 ppm. I usually do 800 to 1000 ppm in veg and 1200 to 1400 ppm in flowering. At 1600 I usually get some leaf tip burning and huge buds.. Chuck.
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Selected By The Grower
Similar Grow Questions
Solved
Snaqq
phosphorus and boron anomaly
Could someone please explain the precise mechanism underlying the phosphorus anomaly? As anticipated, availability decreases with increasing pH, yet it exhibits a sudden surge at pH 8.5. What is the exact (bio)chemical rationale behind this phenomenon? Boron has a similar pattern
Feeding. Chemical composition
Feeding. Deficiences
Feeding. Other
1y ago
33
17
Solved
Loulou84
Help. Will she fatten up or is she done?
She's 8 week auto Blueberry. Small genetics at only 60cm fully grown. She's still developing at the bottom but pistils are turning brown. I want to get her to fatten up a bit more before harvest. Harvest time states around 10 weeks. How can I get her bigger buds? Is she ok?
Buds. Not fattening
Plant. Spaces between nodes
Feeding. Other
6y ago
2
Solved
SwissKush
DWC water change or NOT?
DWC - The DWC smells good, there are no signs of rot or foul smells - I use 3% H202. I keep the temps under 22. The plants are doing great. Should I just add in my flowering nutrients and let it keep running, or should I disinfect and do a full change? Thanks in advance!
Week 3
Feeding. Other
5y ago
2
1
Solved
Scilef
Unstable pH and ppm in run off
Why run off mixture has stable high pH and doubled ppm?In 6.1 500 ppm Out 6.4 1020 ppm (each watering for the last week)I use Top Crop Coco substrate prepared with 0.2 g/L nutrients, how long will it affect run off ppm value?
Week 3
Setup. Substrates
Feeding. Other
2y ago
4
3
Solved
xtRaCorTx
Bloom additives Full Tilt Alternative?
Currently waiting on an order of Floraflex full tilt nutes, unfortunately, they may not make it in time for this grow due to shipping delays. Does anyone out there know of any other bloom additives l could use with Floraflex B1 and 2 to give my girls a boost mid to late flower?
Week 7
Feeding. Other
5y ago
2
2
Solved
Nurse
help mi guys. yellow leaves
The heads of the leaves turn yellow and then their burn.I only fertilized twice.For a few weeks, I only use city water, 500 ppm.And water Run off 1000 ppm.should i do to give more water to reduce ppm?And what should be the ppm of run off?Or should I fertilizer later? thanks
Other. General questions
Feeding. Other
5y ago
2
3
Solved
Fleetwood
Virgin Auto-flower Grower Could Use Advice
Do auto-flower plants require different nutrients than photo-period plants? Did you read this question mostly because it had virgin in the title? Did you just giggle because you saw 'tit' in title? Thanks in advance.
Plant. Other
Feeding. Other
6y ago
1
1
Solved
Grimcat
Help with nutrients
I am using T.A. Pro Organic nutrients. The NPK values are different than stated on their site. Is it possible for me to use these nutrients without causing N toxicity? Please see pictures. Thank you!
Feeding. Other
5y ago
2
2
Solved
Hansgrube
GHE pH Down - Please Help
My pH meter broken during a grow, ran out of pH liquid and It will take couple of days to get. My tap water ph level is 7.6 - can someone measure for me how many drops/ml should I use with GHE PH down. Thanks community 🙏
Setup. Other
Feeding. Chemical composition
Feeding. Other
6y ago
1
3
Solved
GR0WER
Subsrtate ph is too high
From the every beginning my ph monitors (soil sensors) are showing ~ph7. I drained it with ph 5.2 solution for two times already, but I still have ~ph6.8 - 7 in both of my pots. Will it hurt my sweet babies? How to make soil ph lower without damage them? Please help me.
Week 1
Feeding. Other
3y ago
5
4
Solved
kevgrow
What organic nutrients should I purchase for root organic soil
Hi, I am working on my very first grow, I purchased root organic soil for my medium. Not sure which organic nutrients will go well with this soil. Any recommendations?
Feeding. Other
6y ago
1
1
Solved
mbatista
EC and PH of Runoff is Higher than Solution
I'm putting a full nutrients indication in all watering since beginning of flowering. And I was suspecting it was too much, so I decided to measure the runoff of the plant. And the measuremet was: PH - in: 5.88 -> out: 6.76 EC - in: 1.15 -> out: 1.27 And now? what this mean?
Week 9
Feeding. Other
5y ago
4
4
Solved
Chris_Beuzel555
I use them Rhizobinum bacteria feeding for growing.... I,m guising to much activity in the medium..... I cooled,,,, but cannot use more water..... I,m hoping tomorrow it wil stop,,,,, or I have a problem.... What can I do??? I can put it outside,,,, then they stop multiplying..
Week 8
Feeding. Other
6y ago
3
2
Solved
Zappdoggy
Bad ph water, it bounces like a pogo stick
My city water supply sucks. The ph rises and falls in such a wide range that it is difficult to keep up to what it needs to level out the ph. I have seen 5.8 up to 8.9 just in the last month. Is there a cheaper method than using the standard PH down?
Week 8
Feeding. Other
3y ago
5
4
Solved
Anonymous_2022
Hi all … does anyone make there own PK boosters? Or nutrients? Im currently making my own potassium and calcium powders just to be able to control things if I get any deficiency all from natural products, any tips, advice? Thanks
Feeding. Other
3y ago
1
2
Solved
Dico29
Preflower or flower
Hey y’all can anyone tell me if it’s smart to start adding more potassium and phosphorus or let it go for a while? Thanks
Week 6
Feeding. Other
6y ago
2
3
Solved
Philindicus
When to start feeding autos
I'm using a blended soil mixture of 65% Ocean Forest, 30% Canna coco coir with 5% extra perlite to grow my auto flowers. Wanted some opinions on when most growers decide to start feeding. Like Day10, 14 or 21 etc. ?
Week 1
Feeding. Other
6y ago
5
6
Solved
Drstormy
Root boost fert
I will start using Root boost from plagron at the start of the second week, I will use half a dosage so 0.5ml/l , should I do one day with Root boost and one day with water or can I always water the plants with Root boost?
Week 1
Feeding. Schedule
Feeding. Other
6y ago
1
1
Solved
Skunkmaster420
Help
Does anyone know how to use this?I was given it for free but I do not know how to use dry amendments
Feeding. Other
5y ago
1
1
Solved
The_Northern_Skunk
Ran out of CalMag
Ran into a issue on week 5 of flowering, I've ran out of CalMag and theres been a delay with the post lately, I have a box of epson salts could I use this as a substitute for the time being?
Week 9
Feeding. Schedule
Feeding. Other
5y ago
1
1