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Cannabis pH Management - How to adjust pH in Water and Soil
Brown spots appearing on your lower leaves? See what cannabis leaves look like as a result of pH fluctuations and learn the solution!

I'm 4 weeks into bloom. What ppm are your nutes at? Are you running DTW?I've grown in Jacks in hydro and never had a Phosphorus problem. Usually it was root damage or PH out of whack.
Are you in bloom or veg?
But are your stems purple? And is it common with your strain?
Nah, I have done hydro long enough to know better. The other four are fine, but its the largest (by 2-3x) that is suffering. I have already flushed it with dilute nutes as I know to NEVER use just plain H2O. I'm mixing a new batch of nutes that is weaker as I have been running my EC a bit high. This is primarily a test (for these two strains to see what they can handle. Sort of a torture test and it looks like I won the battle. LOL. Normally the plant talks to me and says when its sad or mad. This one just rusted its edges.When I see something like that I know it's a death sentence. Once you catch it it's almost too late. Three days and it's dead. I don't know about hydro but when I used to get that in soilless it was always nute lockout and I would flush with water only right away.
Got to toot my horn here with Dyna Gro. I have NOT had that happen since I started using it a few years back. I love this stuff![]()
RDWC is what I ran with that. Also had an automatic PH adjustment so the pH flunctuations would stay in check.I'm 4 weeks into bloom. What ppm are your nutes at? Are you running DTW?
Dynagro for me as well. Have had great results and zero bullshit since I started using it years ago. Using RO and no cal/mag supplementation.When I see something like that I know it's a death sentence. Once you catch it it's almost too late. Three days and it's dead. I don't know about hydro but when I used to get that in soilless it was always nute lockout and I would flush with water only right away.
Got to toot my horn here with Dyna Gro. I have NOT had that happen since I started using it a few years back. I love this stuff![]()
Unless it's the cake hahaDynagro for me as well. Have had great results and zero bullshit since I started using it years ago. Using RO and no cal/mag supplementation.
Is WC a CalMag whore?Unless it's the cake haha
Got me on that one. Haha. 99 percent no problems.Unless it's the cake haha
She an everything whore. Fickle as fuck. But dialed in is an absolute beauty. Top 3 of the 50 or so strains I've ever completed. Got a cut from a gracious homie. Ran her once and had nothing but problems. Over lighted and fried from the gate. Then phantom deficiencies in her teens. End of flower barely any fan leaves remained. I was gonna give up on another run but decided I really wanted to see what she could do. Second run epic and to this day one of the best I've ever seen. Literally checks all the boxes at 10 weeks.Is WC a CalMag whore?
About sums it up lolShe an everything whore. Fickle as fuck. But dialed in is an absolute beauty. Top 3 of the 50 or so strains I've ever completed. Got a cut from a gracious homie. Ran her once and had nothing but problems. Over lighted and fried from the gate. Then phantom deficiencies in her teens. End of flower barely any fan leaves remained. I was gonna give up on another run but decided I really wanted to see what she could do. Second run epic and to this day one of the best I've ever seen. Literally checks all the boxes at 10 weeks.