Nute burn or mag def?

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heuheuheu

Member
I apologize up front for the HPS lighting, it couldn't be avoided. This problem has been present for the last 2 weeks. It's only a moderate problem but I'd still like to clear it up.


  • Sugar Mando Ryder(auto) 600w HPS 20/4.
  • 5gal DWC with dynagrow bloom, protekt, botanicare cal mag, humbolt honey.
  • pH steady at 5.7 +/- 0.1 for the last 3 weeks.
  • RO water, res temps in the 60's

The fan leaves look like they are mildly bleached with the veins and outer edge being darker. This makes me think mag def.
There are dead spots on the fan leaves, mostly towards the middle and bottom. The tips are fine. Once again mag or nute burn.
Newer growth doesn't show symptoms other than being too light of a green imo.

Thanks for reading if you made it this far.

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overcast00

Active Member
i believe round necrotic spots like that usually indicate a cal/mag deficiency- dont hold me to it, but I would try adding a little more of your calmag suppliment
 
swampy420

swampy420

Active Member
are all of those planted in seperate containers? because im trying to figure out the pic where it looks like you have a bunch of green plants, then a bunch of yellow what looks like right behind it...in pic number 4 i believe it is.

EDIT: im high, so that may very well be just one plant. just trying to clear this up before i put my 2 cents in lol
 
swampy420

swampy420

Active Member
i see now that its one plant. i dont believe its nute burn bc usually nute burn works from bottom to top, and urs seems to be yellowing from the opposite...top to bottom. so id put my money on a nute def.
 
H

heuheuheu

Member
Cal-Mag didn't seem to be the problem. It appears to be getting slightly worse. There's iron in the cal-mag so I think that is ruled out as well. Any other ideas?
 
montanachadly

montanachadly

Active Member
My plants are doing the same thing im using RO water with Sensi cal 8 ml per gallon and it hasnt seemed to get any better like you i thought this was y problem but i guess its how it goes those are some nice looking auto beans your growing there i got like 30 free beans all autos im gonna sprout here in a few days and grow them all through spring and summer while i wait for my trees to finish at the end of sept into oct well if you find the solution to this problem let me know
 
Alexander Supertramp

Alexander Supertramp

Well-Known Member
Calcium deficient. Whats affected will remain the same or may even get a bit worse. I would back off the Protek a bit and up the CalMag some......then watch to see if you have halted the spread...

edit:and always add your Protek first when mixing your solutions, this is very important. Adding it after you have already added other nutes could possibly cause some precipitation and an actual case of nute lockup.....
 
H

heuheuheu

Member
Just a follow up. I'm fairly certain it was a cal or mag issue and it has been resolved. The damage that was done continued to progress which is why I thought I hadn't fixed it.
 
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