Does this look like a phosphorus deficiency?

DudebeDoobie

Well-Known Member
I'm growing in Hydro using the General hydroponics trio series and I keep my pH ranging between 5.5 then 6.8IMG_7453.JPGIMG_7454.JPGIMG_7455.JPG
 

Dumme

Well-Known Member
What's your substrate again, hydro? With that range of pH swing, I'm thinking lockout. Hydro is normally best set for 5.8-ish, unless you're using organics to help with uptake. 6.8 is pretty high.
 

Dumme

Well-Known Member
Even with organic-hydro like aquaponics, the highest I like to go is 6.8pH, at the zenith.
 

Dr. Who

Well-Known Member
High pH blocking Ca uptake!

Ph to 5.7 and let it ride to 6.2 and adjust down. You should be monitoring it daily.

What water?
If it's RO - You need to use a Ca/Mg product to buffer the water.
Plants not stable either - no flipping till 5 leaves a set minimum.
 

DudebeDoobie

Well-Known Member
I think I just figured out that my pH pen is reading 1.5 to 2 points high. I'll calibrate it tomorrow know more. I've been watching my pH and keeping it within what's considered the normal Hydro range. (So I thought) Thanks for the help so far
 
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Dr. Who

Well-Known Member
I'm not sure what this means
A cannabis plant will tell you when it's "stable" by throwing 5 finger leaves off of one petiole .



So a cannabis leaf with 5 from the petiole is this -


If you have less then 5 showing. The plant is not stable yet - do not bloom it!

It looks as though yours are having light issues and have attempted to reveg...
 

DudebeDoobie

Well-Known Member
IMG_7442.JPG OK have corrected my PH problem and raised my lights a few more inches to ease That stress. Here's a photo of a bud that's in the same space about 18 inches away. Different DWC though.
 
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