The Grow Awards 2026 🏆 
how to know how much ppm a cannabis plant can handle
Brent_60sstarted grow question 3y ago
how to know how much a cannabis plant can handle of ppm and how to find out
Solved
Feeding. Other
likes
Chucky324answered 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.
Similar Grow Questions
Solved
flo_420
LEAF DROOP: How much droop is normal between watering?Some of my Cinderella99s are droopy. Based on touching the soil, I would wait another day to water, but the leaves say otherwise.
What do you think about this?Leaves. Curl down
Plant. Wilting
Feeding. Other
4y ago
7
6
Solved
Canna_GuyGro
NutrientsI’m going to feed staring week 3 does anyone recommend any reputable organic nutesWeek 2
Feeding. Other
3y ago
4
5
Solved
bazmone
water and soil ph combinedabout to start my first grow and I am on a tight budget and cannot afford getting a good ph meter ,I decided to use bottled water the problem is i could not find any neutral water the closest is 7 ,I will use biobizz allmix.(6.2ph)
Will the ph lower and stay in the good range?thxSetup. Substrates
Feeding. Other
4y ago
2
Solved
Smartie
Spiral LST vs Topdressing/mulchSpiral LST vs topdressing/mulch.. I planned on training like shown in picture, just not sure how this will work out with 1" of mulch and a monthly topdressing with all the pegs/wires, might get tricky. Thought about bending all sec branches to the outside vs 1out 1in?? Cheers5y ago
4
4
Solved
Joyfull420
Ppm and pH meters arrivedHi guys thanks for the advice, my pH and ppm meters arrived today, the plants run off has a pH of 6.4and ppm of between 500-700(not much run off) but the pH of my watering can (with some BioBizz Grow) is 7.3, the ppm level of the watering can is 440, please help me understand?TXWeek 4
Feeding. Other
5y ago
7
3
Solved
Foxtrotoscar
MediumI’m currently using miracle gro but thinking about changing as I’ve heard bad reviews about controlling the nutes, also I had an amnesia lemon growing alongside my AG and it ended up getting burnt up. If I’m using pots what medium and nutes should I be using throughout? ThanksWeek 8
Feeding. Other
6y ago
4
3
Solved
SleeplessWalker
When should I flush salts and what to expect.Im 3 weeks into flower and I want to have some big bud, but im worried ill get nute lock if I dont flush. When i use a flushing agent, what in addition to the product can i use to improve yield? Would vitamin b or flower power, kool bloom be ok to add to clearex/floraKleen?humic?Feeding. Schedule
Feeding. Chemical composition
Feeding. Other
5y ago
3
Solved
John_Federic
What is the best (cheap) TDS meter? (Also i think they should allow longer questions because 280 characters definitely not enough to describe everything).On the internet and i found A LOT of TDS meters with prices that vary from 10€ to 200€. I decided to ask you: what do you think is the best cheap TDS meter? What do you use? What's the key thing I should considerate when buying one? Are all the same and i'm askin stupid question?Feeding. Other
4y ago
2
3
Solved
LiberFelix
PH keep rising in DWS, RO water?I use tap water (soft water), Canna Vega A/B and related products, with rockwool.
PH is stable around 7.2 - 7.5. I PH down to 5,5 and 6-12 hours later its back up. This is my second rund and had the same problem then.
Could reverse osmosis water help this, or other advices?4y ago
2
1
Solved
MonkeyDonkey
pH: how often using same testing liquid / pH changes in larger cans over days?pH adjustments need to be done before each watering. a.)How many times do you reuse the 7.01 adjustment liquid before opening a fresh one? When can I not trust it anymore? b.) Adjusting in a tea cup and adding to 3L can for watering for the next 2 days ok or will pH change again?Feeding. Other
5y ago
2
3
