What could this be?

pthobson

Well-Known Member
Yes and I doubled the dose on the cal-mag today because I was thinking the same deficiency

That’s the best pic I could get with the lighting but it has a light tent to a few leaves as this one
I wouldn’t do anything drastic it looks very healthy
 

Fupaslayer

Well-Known Member
When I was in coco I noticed my plants liked lower pH than I was expecting for their uptake.
I usually do 5.8 but I looked to see what the mg nute update was and decided to do 6.0 today hoping it would take it easier if that was the deficiency I was having
 

JohnDee

Well-Known Member
What are you seeing? Looks very healthy
That big leaf in the middle...note the fading between veins. Called interveinal chlorosis and you'll see it in Mg and K deficiencies. Mg is most commonm unless there's overfeeding...then K can get locked out with a similar appearance.
JD
 

JohnDee

Well-Known Member
All I really did was flush it with two gallons one gallon having double dose of cal-mag
That's a good choice. You don't have any Ca issues so maybe keep calmag at standard dose and throw in a little epsom salts so you don't get too much Ca. I'd use 1/2 tsp/gal and once it improved...include 1/4 tsp/gal as maintenance dose.
JD
 

Fupaslayer

Well-Known Member
That big leaf in the middle...note the fading between veins. Called interveinal chlorosis and you'll see it in Mg and K deficiencies. Mg is most commonm unless there's overfeeding...then K can get locked out with a similar appearance.
JD
Thanks for the help
 

DaFreak

Well-Known Member
that is a def im sure,not ph issue....i hope your fix works bro
How do you tell the difference? If a pH is off and the nutrient is not taken up then it shows as a def.


I never really trust these charts but when I had mg problems in coco I found setting low would help.
 

Fupaslayer

Well-Known Member
How do you tell the difference? If a pH is off and the nutrient is not taken up then it shows as a def.


I never really trust these charts but when I had mg problems in coco I found setting low would help.
Thanks I’ll keep this chart in mind
 
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